{"title":"Finished Board","description":"","products":[{"product_id":"a60-current-feedback-amplifier-board-kit-8-pair-parallel-design-dual-channel-hi-fi-inspired-by-accuphase-a60","title":"A60+ Current-Feedback Amplifier Board Kit | 8-Pair Parallel Design, Dual-Channel Hi-Fi | Inspired by Accuphase A60","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-12-3-1018x1536.jpg_20260331152543.jpg?v=1774942638\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe A60+ board is an improved version based on the previously successful A60 design. Key enhancements include an increased number of output transistors (supporting up to 16 pairs \/ 32 pieces per channel), providing greater driving capability and the option to be adjusted to operate in Class A mode. Furthermore, the rectification section has been upgraded with a 120A low-resistance, high-speed rectifier, resulting in superior dynamic response.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Accuphase A60 was a flagship amplifier of its generation, offering excellent density in both high and low frequencies, superb control, and outstanding detail and layering. Its circuit features a fully symmetrical architecture with current-feedback. A key characteristic of this design is the use of complementary push-pull circuitry from the input stage all the way to the output stage, enabling an exceptionally high slew rate of hundreds of volts per microsecond. This results in excellent drive capability for capacitive loads and overall sound quality that surpasses the earlier A2 model.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eMaterial Selection Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eDifferent transistor pairings yield distinct tonal characteristics. Please note that this is a \u003cstrong\u003epure power amplifier (main amplifier)\u003c\/strong\u003e. Some customers have attempted to compare its bass performance with that of 2.1-channel speaker systems. For dedicated bass, purchasing a subwoofer would be a more suitable choice.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePaired with Toshiba 2SC5200\/A1943:\u003c\/strong\u003e Delivers a \u003cstrong\u003etube-like (valve) sound character\u003c\/strong\u003e, offering \u003cstrong\u003erefined detail\u003c\/strong\u003e and a \u003cstrong\u003efull, rich tonal quality\u003c\/strong\u003e with a \u003cstrong\u003eslightly warmer, mellower tilt\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePaired with ON Semiconductor Series High-Power Transistors:\u003c\/strong\u003e Produces a \u003cstrong\u003elively, articulate sound\u003c\/strong\u003e with \u003cstrong\u003eexcellent layering and harmonic overtones\u003c\/strong\u003e, and \u003cstrong\u003estrong rhythmic drive\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePaired with Japanese Sanken High-Power Transistors:\u003c\/strong\u003e Provides \u003cstrong\u003edeep bass extension\u003c\/strong\u003e, \u003cstrong\u003epowerful dynamics\u003c\/strong\u003e, and \u003cstrong\u003etight, solid, and forceful low frequencies\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/16_O1CN01Mf9jIy1OQC1rllJul_88221699-1024x824.jpg_20260331152544.jpg?v=1774942681\"\u003eIn addition, a specially custom-made \u003cstrong\u003e500W toroidal transformer with independent power supply for each channel\u003c\/strong\u003e is available.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/19_O1CN01um9Ly11OQC1rlleiD_88221699-1024x867.jpg_20260331152554.jpg?v=1774942681\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBased on personal comparison, thanks to the excellent circuit architecture, the use of Hi-Fi grade transistors (2SC2240, 2SA970, 2SA2705, 2SA114 complementary pairs), ON Semiconductor’s 15032\/15033 for the output stage, and circuit parameters refined through countless adjustments, this amplifier delivers superior sound quality. It outperforms amplifiers like the KSA50 and various Goldmund-inspired clones in every aspect: bass performance, the sweetness of vocals, and the transparency of the highs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eThe board features a built-in rectifier circuit, so you only need to connect a transformer; no external rectifier board is necessary. Wiring and installation are very straightforward. The fully symmetrical architecture, combined with precisely matched transistors, ensures the midpoint voltage is extremely stable without the need for adjustment.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eTo set the quiescent current per output transistor to 50-100mA, adjust the board’s single TEST point until the voltage drop across its two terminals measures 20-30 mV.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eImportant Note:\u003c\/strong\u003e Remember to use mica insulation sheets when mounting the output transistors, and ensure the mica sheets are fully coated with thermal paste.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 24V x 2 ~ AC 42V x 2 \u003cstrong\u003e+\u003c\/strong\u003e AC 12V \u003cem\u003e(Note: The AC12V is for the protection circuit)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200W @ 8Ω | 400W @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.002%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS\/N Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Hz – 40 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e273 mm x 88 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Net Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 588 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeatsink Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e348 mm x 148 mm x 50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLarge Cap. Mounting Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25-30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDefault Resistors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhilips brand resistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/33_O1CN01xwqadm1OQBtNUBNTs_88221699.jpg_20260331152559.jpg?v=1774942794\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-13-3.jpg_20260331152559.jpg?v=1774942794\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-14-1.jpg_20260331152609.jpg?v=1774942794\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/36_O1CN01w6Ecne1OQBfJ7oTdb_88221699.jpg_20260331152631.jpg?v=1774942793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/44_O1CN01h2JKTG1OQBvWsYQLk_88221699.jpg_20260331152608.jpg?v=1774942452\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/43_O1CN01HULz5h1OQBvWsaybg_88221699.jpg_20260331152614.jpg?v=1774942437\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/3_O1CN01gU2vDc1OQBvYdWNU2_88221699-600x600.jpg_20260331152623.jpg?v=1774942422\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/39_O1CN01KbXvxn1OQC1qnmZaF_88221699-1024x778.jpg_20260331152617.jpg?v=1774942793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eGenuine Philips (PHILIPS) MRS25 1% Metal Film Resistors.\u003c\/strong\u003e\u003cspan\u003e High-stability metal film resistors featuring low current noise level, low temperature coefficient, and low tolerance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Dual-Channel Kit (2SC2240 Version)","offer_id":51237956124976,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"Finished Board (without output transistors \u0026 main filter capacitors) - 2SC2240 Version","offer_id":51237956157744,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true},{"title":"Finished Board with Toshiba 5200 Pair \u0026 ELNA Capacitors (2240 Version)","offer_id":51237956190512,"sku":null,"price":329.99,"currency_code":"USD","in_stock":true},{"title":"A60 Matching Heatsinks (Two Pieces Dark Gray)","offer_id":51237956223280,"sku":null,"price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-11-4.jpg_20260331152547.jpg?v=1774943053"},{"product_id":"bl53a-tpa3116-2-0-channel-digital-amplifier-board-home-use-100w-x-2-with-premium-red-ring-inductors-bluetooth-5-3","title":"BL53A-TPA3116 | 2.0 Channel Digital Amplifier Board | Home-Use 100W x 2 with Premium Red Ring Inductors | Bluetooth 5.3","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-16-1.webp?v=1775879325\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-12-4_fdd5f37c-b13b-4ab4-908d-75632b8b375a.webp?v=1775879354\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-11-5_bd26fef3-2c55-45db-8f5d-1674ae61afcd.webp?v=1775879365\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-15-1_e46158f8-fd58-42a1-a99f-7b4febead119.webp?v=1775879376\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-17-1.webp?v=1775879389\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-13-4_176e7ece-422a-4be1-98ea-2718a05bcc2b.webp?v=1775879402\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-19-1.webp?v=1775879415\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-14-2.webp?v=1775879429\" alt=\"\"\u003e\u003c\/p\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66511447982384,"sku":null,"price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-15-1.webp?v=1775879240"},{"product_id":"classic-reproduction-maran-hdam-sweet-vocal-amplifier-audiophile-grade-amplifier-board-with-original-field-effect-input-transistors","title":"Classic Reproduction Maran HDAM Sweet-Vocal Amplifier: Audiophile-Grade Amplifier Board with Original Field-Effect Input Transistors","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eMarantz HDAM Audio Linear Amplifier Circuit (Japan) delivers exceptional sound quality: powerful low end, rich midrange, and delicate highs, resulting in a comfortable listening experience with a tube-like flavor—far surpassing typical op-amp preamps. Unfortunately, the core transistor K170 was discontinued in later production, and substitutes like the K246 or K30 could not fully restore its beautiful sonic character.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eIn 2024, we sourced original Toshiba replacement transistors from overseas that perfectly match the characteristics of the K170. Each SMD package contains two matched 2SK transistors, eliminating the need for manual pairing and offering even lower distortion. The output stage employs two pairs of Toshiba 2SC5200 and 2SA1943 driver transistors, capable of delivering up to 15A peak current—far outperforming digital amplifiers and the LM3886. The circuit includes comprehensive protection: over-temperature, output over-voltage, and delay startup.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003ePremium components are used throughout: genuine transistors, German WIMA capacitors, 1% precision resistors with copper leads, Japanese Omron relays, and a dual-layer PCB with immersion gold plating.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePCB Dimensions:\u003c\/strong\u003e 184 x 122 mm\u003cbr data-filtered=\"filtered\"\u003e\u003cstrong\u003ePower Supply Voltage:\u003c\/strong\u003e AC 18V x 2 to AC 28V x 2\u003cbr data-filtered=\"filtered\"\u003e\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 70W @ 8Ω \/ 100W @ 4Ω\u003cbr data-filtered=\"filtered\"\u003e\u003cstrong\u003eFrequency Band:\u003c\/strong\u003e 10–40 kHz\u003cbr data-filtered=\"filtered\"\u003e\u003cstrong\u003eMaximum Capacitor Mounting Height:\u003c\/strong\u003e 35 mm\u003cbr data-filtered=\"filtered\"\u003e\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e Approx. 868 g\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Very simple. After ensuring correct soldering, power on and adjust the variable resistor so that the voltage across the TEST points is 20–40 mV. This corresponds to a quiescent current of 100–300 mA. Turning left reduces the current; turning right increases it.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-21.webp?v=1775879755\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-1-5.webp?v=1775879780\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/HDAM_-_-_-1080x1536.webp?v=1775879796\" alt=\"\"\u003e\u003c\/p\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66511453651248,"sku":null,"price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-20.webp?v=1775879503"},{"product_id":"m4-replica-of-british-sugden-sf60-kit-audiophile-grade-amplifier-board-classic-sounding-outperforms-lm3886-tda7293","title":"M4 | Replica of British Sugden SF60 Kit | Audiophile-Grade Amplifier Board | Classic Sounding | Outperforms LM3886 \u0026 TDA7293","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Many have reported issues such as operating point drift or other problems after swapping op-amps. In fact, the use of \u003cstrong\u003eAD827\u003c\/strong\u003e and \u003cstrong\u003eLME49720\u003c\/strong\u003e is not recommended, as these two op-amps require relatively low feedback resistor values. \u003cstrong\u003eDirectly replacing with dual op-amps from the OPA or MUSES series will work without any issues.\u003c\/strong\u003e Examples include the \u003cstrong\u003eOPA2604, OPA2132, OPA1612, MUSES8920, MUSES02, OP275, and TL1057\u003c\/strong\u003e, all of which are fully compatible and can serve as drop-in replacements.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eThe resistor marked with \u003cstrong\u003e“?”\u003c\/strong\u003e on the board has a value of \u003cstrong\u003e3.9 kΩ\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eFinished board weight:\u003c\/strong\u003e approx. 205 g (net weight)\u003cbr\u003e\u003cstrong\u003eFinished board + capacitors + Toshiba heat sink:\u003c\/strong\u003e approx. 797 g\u003cbr\u003e\u003cstrong\u003eFinished board + capacitors + ON Semiconductor heat sink:\u003c\/strong\u003e approx. 767 g\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eThe M4 circuit is derived from a replication of the British Sugden SF-60. This British circuit is truly remarkable, reproducing musical melodies that captivate and immerse the listener completely. Its pure and natural sound quality is thoroughly embodied in the circuit design. Compared to the Audiolab 8000A, it clearly surpasses it by two levels, especially in the layering and refinement of the mid-to-high frequencies.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eThe performance of this amplifier far exceeds that of amplifiers using the NEC UPC2581V as a driver transistor. Its midrange, in particular, is much more listenable and comfortable. More importantly, it allows for the replacement of the input op-amp, offering the enjoyment and satisfaction of tailoring the sound signature and performing upgrades. If sufficient heat sinking is provided, the unit can even be adjusted for pure Class A output! The product includes complete overcurrent protection, delayed startup protection, and output DC protection to ensure the safety of your valuable speakers.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003ePurchase options include either a component kit or a finished board. The main heat sink must be purchased separately: thickened version ($14).\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePower Supply Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAC22VX2 to AC36VX2\u003cbr\u003e\u003cstrong\u003ePCB Dimensions:\u003c\/strong\u003e 153 x 128 mm\u003cbr\u003e\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 150W + 150W (4Ω), 100W + 100W (8Ω)\u003cbr\u003e\u003cstrong\u003eOptional Power Transistors:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eON Semiconductor complementary pair NJW0281\/NJW0302\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eToshiba 2SC5200\/2SA1943\u003cbr\u003e\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 10 Hz – 40 kHz\u003cbr\u003e\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Mica insulators, mounting screws, fixing brass spacers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eNotes on Transistor Selection:\u003c\/strong\u003e\u003cbr\u003eThe ON Semiconductor transistors offer excellent technical performance with well-layered sound, while the Toshiba transistors deliver warm, captivating tonality and outstanding bass.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePurchase Note:\u003c\/strong\u003e\u003cbr\u003eBoth the kit and the finished board \u003cstrong\u003edo not include\u003c\/strong\u003e the two 10000 µF main filter capacitors, which must be purchased separately.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eKey Components:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eDouble-sided immersion gold PCB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eGerman WIMA MKS coupling capacitors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eMilitary-grade 718 series resistors with copper leads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eJapanese Omron relay\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eImported original transistors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eJapanese Nippon Chemi-Con (Black Gate) capacitors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eSanken rectifier bridge\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eAdjustment:\u003c\/strong\u003e\u003cbr\u003eThis board is very simple to adjust. You only need to measure and set the quiescent current of the output transistors.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/1_0cfe046a814c17284c301e26e59fbe4b_4829ce70-121e-4d15-8d42-237e594e59e5.webp?v=1775880614\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/2_9dc1ea9cf3c028ec89cc3159f7e22ee9_deb1865a-84f5-4fd3-b669-f34c43cd77e9.webp?v=1775880631\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-23.webp?v=1775880643\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/10_O1CN01F1lZBJ1OQBwA6eyX6_88221699-1047x1536.webp?v=1775880658\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-5-6-1024x1014.webp?v=1775880671\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-8-4-1176x1536.webp?v=1775880682\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/13_O1CN014ZDfEo1OQBzQyk6Xs_88221699.webp?v=1775880696\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/3_O1CN01uRL24T1OQBzPWNE8z_88221699-1.webp?v=1775880735\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/5_O1CN011d0H1o22OtXczPEbb_6000000007111-0-cbu_global_ai_agent-1.webp?v=1775880752\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-1-6.webp?v=1775880763\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-2-5.webp?v=1775880781\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-9-4.webp?v=1775880793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/19_O1CN01Do2xRE1OQBwCV3iFF_88221699-1024x991.webp?v=1775880808\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eCopper Leads of Resistors\u003c\/strong\u003e\u003cspan\u003e: Noticeably thicker and sturdier than standard resistors, comparable to those used in DALE brand resistors.\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eTemperature Coefficient\u003c\/strong\u003e\u003cspan\u003e: 25-50 pp\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003ePower Rating\u003c\/strong\u003e\u003cspan\u003e: 1\/4W\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eTolerance\u003c\/strong\u003e\u003cspan\u003e: 1% (indicated by 5 color bands)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/21_O1CN01H2ToNm1OQBzPAWznd_88221699.webp?v=1775880821\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Kit (with ON Semiconductor power transistors)","offer_id":66511469478192,"sku":null,"price":89.0,"currency_code":"USD","in_stock":true},{"title":"Kit (with Toshiba power transistors)","offer_id":66511469510960,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true},{"title":"Finished board (with ON Semiconductor power transistors)","offer_id":66511469543728,"sku":null,"price":119.0,"currency_code":"USD","in_stock":true},{"title":"Finished board (with Toshiba power transistors)","offer_id":66511469576496,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"300w pure copper wire transformer","offer_id":66511469609264,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true},{"title":"Thickened heat sink (mounting holes drilled free of charge)","offer_id":66511469642032,"sku":null,"price":14.0,"currency_code":"USD","in_stock":true},{"title":"Finished board + capacitors + heat sink (Toshiba version)","offer_id":66511469674800,"sku":null,"price":179.0,"currency_code":"USD","in_stock":true},{"title":"Finished board + capacitors + heat sink (ON Semiconductor version)","offer_id":66511469707568,"sku":null,"price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/1_0cfe046a814c17284c301e26e59fbe4b.webp?v=1775904826"},{"product_id":"pga2310-muses72320-flagship-remote-volume-controller-preamplifier","title":"PGA2310 MUSES72320 Flagship Remote Volume Controller\/Preamplifier","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-1-8-844x1536.webp?v=1775881010\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eNote: The PGA2310 and MUSES72320 boards can be used as a volume potentiometer or as a preamp. When the GAIN is set to 0, the gain is 0 DB. This is equivalent to a pure potentiometer. When the GAIN is set to greater than 1, it can be used as a preamp, with a gain of 3-21 DB. There is no need to set it too high, otherwise the signal will be too strong and cause the rear stage to saturate. It is better to set it within 12 DB.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eThere are two methods to set the GAIN. The first method is to use the gain button on the remote control. Press it once to switch one gain level. The display screen will show the corresponding indication, and the LED on the board will also show the corresponding indication.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eThe second method is to directly press down the volume potentiometer without rotating it. This will also switch the GAIN level, which is very convenient.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/5_O1CN01LZLPZX1OQBtgaPkFD_88221699-1024x820.webp?v=1775881035\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/6_O1CN01pCeD341OQBtcjIYvH_88221699-1024x801.webp?v=1775881044\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-26_3857ade0-3634-49ca-a3ec-94fe6ace7e66.webp?v=1775881062\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-4-8.webp?v=1775881073\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/10_O1CN01vd3OFq1OQBtfqrStU_88221699.webp?v=1775881085\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-5-7.webp?v=1775881098\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/2_O1CN01srGV5L1OQBwWa9Urp_88221699_cdac89ec-34f8-422a-b039-61c092b756d1.webp?v=1775881109\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"PGA2310 Volume Preamplifier (without display)","offer_id":66511470592304,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true},{"title":"MUS72320 Volume Preamplifier (without display)","offer_id":66511470625072,"sku":null,"price":159.99,"currency_code":"USD","in_stock":true},{"title":"PGA2310 Volume Preamplifier + Display","offer_id":66511470657840,"sku":null,"price":89.99,"currency_code":"USD","in_stock":true},{"title":"MUSs72320 Volume Preamplifier + Display","offer_id":66511470690608,"sku":null,"price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-26.webp?v=1775904873"},{"product_id":"pixie-pam8406-mini-speaker-diy-audiophile-grade-class-d-digital-amplifier-board-5v-power-amplifier-bluetooth-module","title":"Pixie PAM8406 Mini Speaker | DIY Audiophile-Grade Class D Digital Amplifier Board | 5V Power Amplifier Bluetooth Module","description":"\u003cp class=\"ds-markdown-paragraph\"\u003eThe amplifier board delivers exceptionally clear sound right out of the box, with vocals that are very pleasant, smooth, and highly listenable. Its output is robust, providing excellent performance when paired with 2 to 4-inch speakers.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eFor power, it can be conveniently operated using a \u003cstrong\u003emobile phone charger\u003c\/strong\u003e or a \u003cstrong\u003ecomputer USB port\u003c\/strong\u003e. A \u003cstrong\u003e5V 2A power supply with a TYPE-C interface\u003c\/strong\u003e is recommended for optimal performance.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eConstructed with premium materials, the board features \u003cstrong\u003every low power consumption\u003c\/strong\u003e, \u003cstrong\u003eminimal heat generation\u003c\/strong\u003e, and is designed for reliable long-term use.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-12-5.webp?v=1775905071\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/4_O1CN01fUpIi21OQBu72JZYc_88221699.webp?v=1775905071\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-13-5.webp?v=1775905071\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/8_O1CN01Y178531OQBtvUycxu_88221699.webp?v=1775905157\" alt=\"\"\u003e\u003c\/p\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66511804629296,"sku":null,"price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-11-6.webp?v=1775905071"},{"product_id":"stk412-530-finished-amplifier-board-audiophile-grade","title":"STK412-530 Finished Amplifier Board, Audiophile-Grade","description":"\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePrimary Voltage:\u003c\/strong\u003e 33-0-33V AC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eSecondary Voltages:\u003c\/strong\u003e 17-0-17V AC \u0026amp; 14-0V AC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-1-7.webp?v=1775905500\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eAbout SANYO Semiconductor (an ON Semiconductor Company)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eSANYO Semiconductor Co., Ltd. (an ON Semiconductor company) is a semiconductor manufacturing company with excellent power device technologies, such as miniaturized packaging, high-efficiency switching, and high-density packaging, as well as world-class analog technology. Its analog-related assets include extensive process technologies, analog design expertise, skilled analog engineers, and specially designed and manufactured energy-saving and environmentally friendly devices, such as hybrid integrated circuits for inverters. SANYO Semiconductor’s core devices include discrete circuits, general-purpose analog LSIs, ASSPs, and hybrid ICs, widely used in various products like personal computers, printers, cable TV systems, mobile phones, audio-visual equipment, gaming devices, car audio systems, and air conditioners.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eAbout SANYO STK (Thick-Film Integrated Circuits)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eThe SANYO STK series is commonly known as “SANYO Thick-Film.” Its meticulously tuned sound performance and the high-precision control in its semiconductor production process are levels that ordinary amateur DIY enthusiasts simply cannot achieve. Beyond offering better soundstage and resolution, its bass impact is significantly stronger—it’s like the difference between a professional athlete and an average player! These thick-film circuits were always custom products specifically made for major audio brands. In the past, many famous manufacturers used them to build power amplifiers. Nearly all major Japanese audio brands of the era adopted them—such as K+H, Sony, Panasonic, Kenwood, JVC, Sansui, Sharp, Pioneer, Aiwa, and more—and continued their use for over twenty years. They influenced an entire generation and represent the quintessential sound of that era, etched deeply into the memory of those who grew up with it, a sound that is unforgettable upon every listen. The SANYO division specializing in amplifier modules was later acquired by the American company ON Semiconductor. Post-acquisition, the integration of SANYO’s traditional craftsmanship with ON’s unique design made subsequent products even more outstanding. They continue to be used by major American and European companies today, such as Bose and Genelec.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eAbout the SANYO STK412-530-E Module\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eWe were fortunate to encounter a batch of brand-new, old-stock SANYO STK412-530-E amplifier modules from SANYO’s later production period. It is said that the versions with the “globe” logo and grey casing are products from after ON Semiconductor acquired SANYO’s production lines. These modules incorporated ON Semiconductor’s design and craftsmanship. Products from that phase broke from the traditional, aesthetically unappealing black casing of older SANYO modules, becoming more refined and delicate, with significant improvements in internal build quality as well. Objectively, in terms of listening experience, they far surpass the older SANYO modules.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eUnfortunately, very few products from that time can still be found today. That period coincided with the rapid rise of the internet and the widespread adoption of various portable devices (especially large-screen smartphones), which gradually led many to forget about these high-performance desktop components. Many once-prominent audio manufacturers were forced to shift their product directions, leaving these custom-ordered modules forgotten in the warehouse of the original SANYO packaging plant in the Philippines for over a decade.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eIt wasn’t until late last year that a friend from Shantou connected us with this batch of products. At the time, we couldn’t find any reference material for this product online. With the help of our friend A Liang, we managed to find only a single application screenshot on a foreign website, which gave us the confidence to acquire the entire batch.\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eAfter testing, we found this module still holds considerable potential. Its actual power output exceeds that of the STK412-430, and it utilizes a high\/low voltage supply. Lacking official documentation, we provisionally rate its power at \u003cstrong\u003e200W x 2\u003c\/strong\u003e, recommend an operating voltage of \u003cstrong\u003e±45V DC\u003c\/strong\u003e, with the maximum operating voltage not exceeding \u003cstrong\u003e±52V DC\u003c\/strong\u003e. (The schematic indicates it requires dual voltage supply; a reference schematic is available via the link in the product description.)\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eProduct \u0026amp; Sales Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eProduct Version:\u003c\/strong\u003e This is a tested prototype version. Each unit is installed and tested before shipping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eIncluded Heatsink:\u003c\/strong\u003e The finished board includes a heatsink as shown in the pictures. For high-power operation, this may be insufficient. Users should add additional cooling based on their actual usage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eMain Filter Capacitors:\u003c\/strong\u003e These are second-hand, salvaged Rubycon capacitors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Only available as a finished board. No kit version is offered, and components are not sold separately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e Warranted to be functional upon arrival. Damage due to overvoltage is not covered. The finished board carries a \u003cstrong\u003e3-month warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePower Supply Voltage:\u003c\/strong\u003e AC dual 24-36V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eRecommended Transformer Power:\u003c\/strong\u003e 300W or above\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 200W x 2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eImpedance:\u003c\/strong\u003e 4-8 Ω\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 120 x 55 x 140 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.45 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/7_O1CN010XAyAK1OQBVtbkyHZ_88221699.webp?v=1775905471\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/8_O1CN01k1YqkJ1OQBVnyx0MQ_88221699.webp?v=1775905866\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/9_O1CN017qZy9d1OQBVtbiQJi_88221699.webp?v=1775905880\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/5_O1CN015mflxm1OQBVrvwS85_88221699_dd55c37b-1a20-475a-9b51-4878956e5908.webp?v=1775905893\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-24_1.webp?v=1775905305\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eGuaranteed functional upon arrival. Damage caused by overvoltage is not covered.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eThe finished board comes with a \u003cstrong\u003e3-month warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePower Supply:\u003c\/strong\u003e AC dual 24-36V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eRecommended Transformer:\u003c\/strong\u003e 300W or above\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eFilter Capacitors (Default Rating):\u003c\/strong\u003e 63V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 100W x 2 @ 4Ω | 80W x 2 @ 8Ω\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eImpedance:\u003c\/strong\u003e 4-8 Ω\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 125 x 49 x 68 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/10_O1CN01gcG0tz1OQC1JVSFA4_88221699.webp?v=1775905946\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/11_O1CN011iy2KA1OQC1PFmXGr_88221699.webp?v=1775905962\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/12_O1CN01JcA9WP1OQC1P1PQzR_88221699.webp?v=1775905981\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eGuaranteed functional upon arrival. Damage caused by overvoltage is not covered.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003eThe finished board carries a \u003cstrong\u003e3-month warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003ePower Supply:\u003c\/strong\u003e AC dual 24-35V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eRecommended Transformer Power:\u003c\/strong\u003e 300W or above\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eFilter Capacitors (Default):\u003c\/strong\u003e Rated at 50V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 200W x 2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eImpedance:\u003c\/strong\u003e 4-8 Ω\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e125 x 49 x 68 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-2-6.webp?v=1775906001\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/14_O1CN01Sf7X7V1OQBoegDgSL_88221699.webp?v=1775906016\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/15_O1CN01pliB901OQBoXgaFOe_88221699.webp?v=1775906033\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/18_O1CN01hc8Uxl1OQBVrMdja9_88221699.webp?v=1775906043\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/19_O1CN01ld4lM11OQBVqQhIqe_88221699.webp?v=1775906067\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/3_O1CN01cIQCmr1OQBVprcoHg_88221699_538f45f8-00ce-4971-a3bd-5d934ee0b835.webp?v=1775906079\" alt=\"\"\u003e\u003c\/p\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK412-490 Amplifier Board-100W x 2","offer_id":66511815606576,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true},{"title":"STK412-530 Version 2-200W x 2","offer_id":66511815639344,"sku":null,"price":69.99,"currency_code":"USD","in_stock":true},{"title":"300w Toroidal Transformer - Dual 33V + Dual 17V + Single 14V","offer_id":66511815672112,"sku":null,"price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/image-24_1.webp?v=1775906131"},{"product_id":"2025版-damp-100-tpa3221功放板发烧级成品模块数字d类双声道hifi","title":"2025 Version DAMP-100 TPA3221 Class D Amplifier Board – Audiophile Finished Module, Dual-Channel HiFi Stereo [Discrete Amp Kits \u0026 Ready-Made Modules]","description":"\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421004735\/e8c60855409e122dcd2407ba5222023e.jpeg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/cbu01.alicdn.com\/imgextra\/i2\/6000000007206\/O1CN01kju25m236PBYR5s04_!!6000000007206-0-cbu_global_ai_agent.jpg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421004735\/2dc61f194595d2b9b161f162fcf1519b.jpeg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421004735\/06450c669763dc1e8ebaad8bfaa4cf80.jpeg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421004735\/307388bcdd114570f9108be6fee4bb3d.jpeg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421004735\/23f108dd2c91be2e0433d22cd325bb25.jpeg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Finished Amplifier Board","offer_id":66568041333040,"sku":"5912938886575","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/21ff848887f6caaf57282bffbee76a2c.jpg?v=1776703846"},{"product_id":"m8-current-mirror-transmission-type-high-speed-and-low-distortion-hifi-level-high-power-power-amplifier-board-the-sound-quality-is-transparent-and-delicate","title":"M8 current mirror transmission type high-speed and low-distortion HIFI-level high-power power amplifier board, the sound quality is transparent and delicate","description":"\u003cp\u003e\u003cimg src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421010219\/13bae9e7dc166bcfa7f4b0abbdc75e0c.jpeg\"\u003e\u003cbr\u003e\u003cspan style=\"font-size: 26px;\"\u003e\u003cstrong\u003eWeight: approx. 222g\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421010219\/aa755303ebd02d773470b17763514091.jpeg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/imgextra\/i2\/6000000003925\/O1CN0159JSkG1erhh4JsCAu_!!6000000003925-0-cbu_global_ai_agent.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/imgextra\/i3\/6000000004633\/O1CN010gmd981k5y6lvZeRb_!!6000000004633-0-cbu_global_ai_agent.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01AZWCF21OQBitGAXwL_!!88221699.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421010219\/8f5651cbd43c4c8e4f90bf85c2c7ea7a.jpeg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/wxalbum-10001658-file.dianxiaomi.com\/wxalbum\/2070599\/20260421010219\/9557f5e9111312d4d8b9a829f9a0a88b.jpeg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/imgextra\/i3\/6000000005992\/O1CN018LzhrL1u8OMUDnSZK_!!6000000005992-0-cbu_global_ai_agent.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/imgextra\/i3\/6000000006137\/O1CN01CxkZJP1vCnn6soi7E_!!6000000006137-0-cbu_global_ai_agent.jpg\"\u003e\u003c\/div\u003e","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Power amplifier kit (excluding power tube)","offer_id":66568075182384,"sku":"5111021370586","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Power amplifier kit (including power tube)","offer_id":66568075215152,"sku":"5111021370587","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Power amplifier finished board (including power tube)","offer_id":66568075247920,"sku":"5115639418832","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN0159JSkG1erhh4JsCAu__6000000003925-0-cbu_global_ai_agent.jpg?v=1776704790"},{"product_id":"参考金桑子a75线路缩小版纯甲类场效应管a75s功放机","title":"Referencing the Accuphase A75 circuit, a compact pure Class A MOSFET power amplifier A75S.","description":"\u003cp class=\"ds-markdown-paragraph\" style='margin: 16px 0px; color: rgb(15, 17, 21); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Oxygen, Ubuntu, Cantarell, \"Open Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;'\u003e\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eWhy build this circuit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"ds-markdown-paragraph\" style='margin: 16px 0px; color: rgb(15, 17, 21); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Oxygen, Ubuntu, Cantarell, \"Open Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;'\u003e\u003cspan\u003eThe A-75 is the successor to the classic A-70. It incorporates Accuphase's new technologies and improvements to certain circuit sections, along with upgraded components. This high-end stereo power amplifier uses MOSFETs and operates in pure Class A, delivering a rated output of 480W×2 @ 1Ω, 240W×2 @ 2Ω, 120W×2 @ 4Ω, and 60W×2 @ 8Ω. Each channel uses ten balanced \"power MOSFET\" amplifier modules. Fully balanced amplification offers better symmetry, lower distortion, higher stability, and stronger drive capability compared to conventional amplification. The A75 continues many excellent designs while introducing major upgrades in several key technologies, including an enhanced MCS+ circuit (an upgraded version of MCS), a front-end buffer amplifier circuit, an improved multi-stage parallel circuit design, and a current feedback design to ensure linear response at all levels. Parallel connection of amplifier unit circuits reduces noise, and a DC stabilizer power supply is integrated into the driver stage and MCS+ circuit to improve the S\/N ratio and sound purity. To ensure sufficient and stable power supply, the power section uses an 800VA high-efficiency large transformer combined with two 67,000µF \"large water tank\" filter capacitors, providing ample and stable power. Low dielectric constant, low loss Teflon substrates and gold-plating on key parts such as input terminals enhance sound purity. Extra-large speaker output terminals are convenient for connecting audiophile-grade speaker cables. The front panel uses a full digital display showing the amplifier's operating mode, with a DSP digital circuit calculating and displaying output power and status.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp class=\"ds-markdown-paragraph\" style='margin: 16px 0px; color: rgb(15, 17, 21); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Oxygen, Ubuntu, Cantarell, \"Open Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;'\u003e\u003cspan\u003eThe A75, a masterpiece from Accuphase's peak period, received wide recognition and praise after its release and is one of Accuphase's most representative works. The sound, tuned with pure Class A and MOSFETs—among many other high-quality elements—breaks the bias some audiophiles held against Japanese amplifiers. Its tone is rich, mid-to-high frequency details are brilliant and precise, imaging is accurate, low frequencies are solid and powerful, and the overall transition is smooth and natural. The strong driving power is enough to handle any speaker claimed to be difficult to drive, and even ordinary speakers can sound like floor-standing models. Through this amplifier, I also understood why many high-end enthusiasts insist on high-power amplifiers.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp class=\"ds-markdown-paragraph\" style='margin: 16px 0px; color: rgb(15, 17, 21); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Oxygen, Ubuntu, Cantarell, \"Open Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;'\u003e\u003cspan\u003eAfter completing a 1:1 direct copy of the machine, we realized that the cost of the direct copy version might not satisfy most users. After careful analysis, we found that typical HiFi speakers rarely go below 4Ω, and using ten output transistor pairs per channel is somewhat wasteful. After multiple tests, we feel that using four output pairs per channel already provides very good driving power and low-frequency control. When driving 4Ω and 8Ω loads, there is almost no audible difference compared to the 1:1 direct copy. By preserving the circuit structure while only reducing the number of output transistors, we can significantly lower costs. The power transformer uses a single 800W toroidal transformer, and the circuit operating voltage remains the same as the original. The output stage uses four pairs (8 MOSFETs) per channel of the same K1530\/J201 MOSFETs as the original. The filter capacitor bank uses two 67,000µF units. The bottom includes a soft-start circuit and an input signal board. The overall structure and function are consistent with the direct copy version.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp class=\"ds-markdown-paragraph\" style='margin: 16px 0px; color: rgb(15, 17, 21); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Oxygen, Ubuntu, Cantarell, \"Open Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;'\u003e\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eOutput power:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003e60W×2 pure Class A @ 8Ω\u003c\/span\u003e\u003cbr\u003e\n\u003cspan\u003e      120W×2 pure Class A @ 4Ω\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eFrequency response:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003e10Hz – 40kHz\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eDistortion:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003e0.001%\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eLoad range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003e4 – 8Ω\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eNet weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003e28kg (packaging approx. 31kg; total weight of sets may vary, extra shipping fee applies)\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003e430mm (W) × 170mm (H) × 409mm (D) (excluding front\/rear handles)\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong style=\"font-weight: 600;\"\u003e\u003cspan\u003eIncluded accessories:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003eOne power cord (default Chinese standard)\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\n\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01b4u5js1OQC2SIEHlC_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN018gvzoJ1OQC2Ntu9vO_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01S560FZ1OQC2SQfbih_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01m2AogB1OQC2S1dRHA_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01C2PvZj1OQC2N3FRD9_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01n0nbnN1OQC2SWf013_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01stVCJ41OQC2MioGam_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01snISer1OQC2Mycv5W_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01q23iqg1OQC2MfZ981_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01eGmCMT1OQC2MB6kzn_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01hklBOh1OQC2MfWC9a_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66570820419888,"sku":null,"price":1099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01b4u5js1OQC2SIEHlC__88221699.webp?v=1776764093"},{"product_id":"class-a-hd1969-power-amplifier-board-gold-sealed-deluxe-collectors-edition-hood1969-power-amplifier","title":"Class A HD1969 Amplifier Board, Deluxe Collector's Edition with Metal Can Transistors, HOOD1969 Amplifier","description":"\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 28.0px;\"\u003e\u003cspan\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"background-color: #ffd700;\"\u003eAt present, all power amplifier boards have been upgraded to a new generation of special tube kings\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01edETPS1OQBtJlZAXI_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThere are many kinds of HD1969 boards on the market, but the design is different, the wiring is different, the material is different, and the sound quality difference is very large. 6 gold-sealed tubes (disassembled) ensure very good quality and sound, and can also be turned on without impact and a quieter background. It is worth collecting and owning!\u003c\/span\u003e\u003c\/span\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01iCbTnh1OQBwXA452c_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN013niAt21OQBtfayEFQ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01QAJ5Aa1OQC2CfK7uG_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003ca href=\"http:\/\/item.taobao.com\/item.htm?spm=a1z10.3-c-s.w4002-23371572373.9.1d3f1cfaA7SjEA\u0026amp;id=7314354497\"\u003ehttps:\/\/item.taobao.com\/item.htm?spm=a1z10.3-c-s.w4002-23371572373.9.1d3f1cfaA7SjEA\u0026amp;id=7314354497\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eOptional transformer\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN011Q6ow71OQBteuMTvm_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01EQPfjP1OQBthxXyk6_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN0124DGqA1OQBtcEIfFv_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN0164iLyv1OQBtg0wnjz_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01JLkyWJ1OQC1G7zLCg_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN016icL7H1OQBthmaIUT_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN013niAt21OQBtfayEFQ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01EwKeYI1OQBtfHrLXo_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01gXZFS81OQBthUXo1w_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Gold-plated PCB 1 pair","offer_id":66600328659248,"sku":"4674596212015","price":15.88,"currency_code":"USD","in_stock":true},{"title":"2 finished plates have been installed and tested.","offer_id":66600328692016,"sku":"4674596212017","price":69.29,"currency_code":"USD","in_stock":true},{"title":"Double 22V transparent envelope","offer_id":66600328724784,"sku":"4888084561742","price":26.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN013niAt21OQBtfayEFQ__88221699.webp?v=1777024539"},{"product_id":"lelin-edition-3-parallel-stk404-090-full-analog-power-amplifier-board-recreating-the-sound-of-the-golden-age","title":"[Lelin Edition] 3-Parallel STK404-090 Full Analog Amplifier Board – Recreating the Sound of the Golden Age","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01c6QK5i1OQC1cmuuS3_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01CWgHAY1OQC1c9Vesq_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN017MT6DE1OQC2sdz1Jb_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01BF0Ovl1OQC1cTRHzB_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01JSILB51OQC1cyMIl4_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01UaaZxp1OQC1cTRM9O_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN017xWjrl1OQC1cTRUSF_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg 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Blaze.","offers":[{"title":"kit","offer_id":66600346222896,"sku":"4655848003033","price":39.09,"currency_code":"USD","in_stock":true},{"title":"Finished board with tube as shown","offer_id":66600346255664,"sku":"4655848003032","price":55.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01vkxtxi1OQBd2AN8oh__0-item_pic.webp?v=1777025046"},{"product_id":"stk4204mk2-sanyo-thick-film-ball-flavor-hifi-professional-power-amplifier-finished-board-100w-high-power-classic-vocals","title":"Sanyo STK4204MK2 Thick-Film Hi-Fi Professional Amplifier Finished Board – Tube-Like Sound, 100W High Power, Classic Vocals Replication.","description":"\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eSTK42xxMK2 power amplifier module is a stereo HI-FI music amplifier released by Sanyo in 1998, module! The interior uses a very feverish cross-flow circuit and a paired high-power transistor, and the power amplifier has high-quality sound quality! (Now let's not talk about amateur situations, even if there is a certain scale of factories at present, it is difficult to get high-precision power amplifier triodes in batches under current circumstances. At present, our domestic audio industry relies on these key components, so it is still difficult to make sound). This power amplifier module also has its own horn protection circuit to directly drive the output relay\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01LWIE9Q1OQByLT3abl_!!88221699.jpg\" style=\"font-size: 14.0px;display: block;width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"width: 750.0px;height: auto;overflow: hidden;\"\u003e\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003eBasic parameters:\u003cbr\u003e\n1. Power supply voltage: AC double 28V-38V (filter capacitor default 50V)\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003e2, Output power: STK4204MK2 50W + 50W 8Ω\u003cbr\u003e\n                     STK4205MK2 50W+50W 8Ω\u003cbr\u003e\n                     STK4214MK2 70W+70W 8Ω\u003cbr\u003e\n                     STK4215MK2 70W+70W 8Ω\u003cbr\u003e\n                     STK4234MK2 100W+100W 8Ω\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003e3, frequency response: 20Hz-50kHz\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003e4, distortion: 0.01%\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003e5, Size: Green plate 143X73X61MM width x depth x height\u003cbr\u003e\nBlack plate 148X70X61MM width x depth x height\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003e6, weight: about 243g\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003e7, Accessories: copper column nut * 4, input shielded wire * 1, long screw * 2\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003eAs can be seen from the parameter table, an 8-ohm load can achieve an actual output power of 50WX2, while the distortion rate is 0.01%! There is no problem with pushing the 8-inch speaker.\u003cbr\u003e\nSound performance: The overall tone is warm, the sound is relatively soft, the treble extension is high but not harsh, the bass is deep enough, and the elasticity is very good, and it will not be mixed or sloppy. Sanyo thick film is a circuit between integrated and discrete power amplifiers, fine workmanship and excellent craftsmanship are stronger than 3886,7294, and it is difficult for general DIY players to achieve this level.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"word-break: break-all;font-size: 20.0px;\"\u003eThe default is the finished board, which has been tested before shipment, and the non-human damage is guaranteed for 3 months.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01gmpoLe1OQByGX4HNG_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01p0C1rE1OQByMSmo8P_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN016ZuHv81OQByMfJTzR_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01NZzLAp1OQByNDcpA1_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01rZGoWt1OQByNDcQDT_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01g9hVIr1OQByN8ijUI_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01aU1KTf1OQByMSqprE_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eThe picture below shows the STK4215 power amplifier board, which is only a module with different power supply and power.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01JFgbZ31OQC1dLecks_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN017DpLlz1OQC1ck1C8l_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK4204 power amplifier board","offer_id":66600349466928,"sku":"5333294902974","price":36.45,"currency_code":"USD","in_stock":true},{"title":"STK4234 power amplifier board","offer_id":66600349499696,"sku":"5340898610510","price":40.41,"currency_code":"USD","in_stock":true},{"title":"STK4215 power amplifier board","offer_id":66600349532464,"sku":"5987265448345","price":37.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN019StdBn1OQBlvpGUvX__88221699.webp?v=1777025124"},{"product_id":"300w-low-distortion-classic-stk-high-power-beautiful-sound-thick-film-stk496-430-power-amplifier-board-diy-finished-board","title":"300W Low-Distortion Classic STK High-Power High-Fidelity Thick-Film Amplifier Board – STK496-430, DIY Finished Board.","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e  \u003c\/span\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan\u003e\u003cspan\u003e   \u003c\/span\u003e\u003cspan style=\"background-color: #ffff00;\"\u003ebasic parameters\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eSTK496-430 power 150W + 150W 6Ω working voltage, AC dual 33-35V\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eSTK496-090 Power 100W + 100W 6Ω working voltage, AC dual 24-35V\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eSTK407-050 Power 60W + 60W 6Ω working voltage, AC double 22-28V\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eAll STK series chips are compatible with 4-8 ohm speaker complexes\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #800080;\"\u003eSanyo STK is commonly known as Sanyo Thick Film. Under the control of the tuned sound and high-precision semiconductor process production process, it is not the level that ordinary amateur DIY players can achieve. In addition to better sound field and resolution, the low-frequency strength is much stronger, which is completely the difference between professional athletes and ordinary players! These thick film circuits have always been customized products for big brand audio manufacturers. In the early days, many famous factories used them to manufacture power amplifiers, such as K + H, Sony Sony, Panasonic PANSONIC, KENWOOD, JEVIS JVC, Shanshui SANSUI, Sharp SHARP, Pioneer PIONEER, Aihua AIWA, etc. Almost all Japanese audio manufacturers use them, and they have been used for more than 20 years, which has influenced a whole generation. It is also a sound with a strong era brand that our entire generation heard when they were young. It always sounds unforgettable. Sanyo, a company specializing in the production of power amplifier modules, was later acquired by ON Semiconductor of the United States. After the acquisition, it integrated Sanyo's traditional craftsmanship, coupled with ON's unique design, and the later products were even more outstanding. They are still used by large companies in the United States, such as BOSE and Genelec in Europe!\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFortunately, I came across a batch of new inventory of the power amplifier module STK496-090 produced by Sanyo SANYO in the later stage, which is a more classic sound of the old Sanyo. Unfortunately, in the later stage, coinciding with the vigorous development of the Internet and the large-scale popularity of various portable devices (especially large-screen touch-screen mobile phones), many people gradually forgot these high-performance desktop devices. Those once famous audio manufacturers had to change their product direction, making these customized products dusty in the original SANYO packaging factory warehouse in the Philippines, staying for more than ten years.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eAfter getting the test, it is found that this module still has relatively large potential. According to the circuit test provided by the official, the sound is medium. Under the recommended working voltage AC double 35V voltage, its output power is 150WX2@6 Ω (THD = 0.05%) The recommended working voltage is DC plus or minus 45V, and the maximum working voltage should not exceed plus or minus 49V. (According to the data provided by the official)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eDIY is very simple, the whole board has been tested, no need to debug; DIY, upgrading and modifying speakers are all good choices.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003ePower supply voltage: AC dual 33-35V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: STK496-430 150W6Ω (measured real power)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eSize: 116 * 73mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eAccessories: Copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e    \u003cspan style=\"background-color: #ff8c00;\"\u003eNote: The filter capacitor defaults to 50V withstand voltage, and the capacitor needs to be replaced if it is higher than 50V power supply.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe finished board is tested and shipped, non-human damage, and the warranty is 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN0177B3lw1OQBoKDWAdk_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01rtRMS51OQBoQWNXWC_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01chc8fW1OQBoYr7WAN_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e    \u003cspan style=\"background-color: #ffff00;\"\u003eDIY is very simple, the whole board has been tested, no need to debug; DIY, upgrading and modifying speakers are all good choices.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eSupply voltage:\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eSTK496-090   \u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eAC Dual 24-35V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e                      \u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eSTK407-050  \u003c\/span\u003e \u003cspan style=\"color: #0000ff;\"\u003eAC Dual 22-28V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: STK496-090 100W6Ω (measured undistorted power)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e                     STK407-050   60W6Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eDimensions:\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eSTK496-090   \u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e116*83mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e                     STK407-050   \u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e135*65mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eWeight: about 180g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eAccessories: Copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe finished board is tested and shipped, non-human damage, and the warranty is 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01nj1YP81OQBlzKS8Gi_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01KwYZvA1OQBlyrOyfF_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01EnjeBu1OQBlzOxRUV_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN019o4sTI1OQBm47ApDS_!!88221699.jpg\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eThe picture below shows the STK407-050 finished board.\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01Kncj0A1OQBwYDmUtd_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN014gUxP71OQBwYglRl4_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01CrTCk81OQBwaKsRB9_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01daJHCj1OQBx0WYXLS_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK496-090 Version 100W + 100W","offer_id":66600354906416,"sku":"5159605564566","price":25.36,"currency_code":"USD","in_stock":true},{"title":"STK496-430 PCB empty board","offer_id":66600354939184,"sku":"5338191647976","price":15.81,"currency_code":"USD","in_stock":true},{"title":"STK407-050 Version 60W + 60W","offer_id":66600354971952,"sku":"5902716974093","price":28.78,"currency_code":"USD","in_stock":true},{"title":"STK496-090 PCB empty board","offer_id":66600355004720,"sku":"5902716974094","price":21.81,"currency_code":"USD","in_stock":true},{"title":"STK407-050 PCB empty board","offer_id":66600355037488,"sku":"5902716974095","price":19.81,"currency_code":"USD","in_stock":true},{"title":"STK496-090 module","offer_id":66600355070256,"sku":"5735318016998","price":23.11,"currency_code":"USD","in_stock":true},{"title":"STK407-050 module","offer_id":66600355103024,"sku":"5735318016999","price":22.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01nj1YP81OQBlzKS8Gi__88221699.webp?v=1777025295"},{"product_id":"全新库存先锋原装pac014a厚膜hifi发烧级功放板成品diy双声道音响","title":"全新库存先锋原装PAC014A厚膜hifi发烧级功放板成品diy双声道音响","description":"\u003cp style=\"color: #333333;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 24.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan\u003e三洋STK442-090定制先锋标PAC014厚膜功放模块80WX2@6欧 全新原装假一罚十。先锋公司找三洋定制的厚膜功放电路，凡是先锋公司的定制产品必定是经过精挑细选反复比较才确定的电路结构和声音特点。PAC014A等同于三洋STK442-090，推荐工作电压正负48V，输出功率80WX2@6欧，失真度THD0.2%。本系列产品声音细节、解析力、人声、低频力度均好于其他系列。模块拆解图上可以看到巨大的保护芯片，而且芯片关键部位均涂透明胶保护。只有后期的高端产品才会这样做，不可多得，买到就是赚到\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #333333;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 24.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #800080;\"\u003e三洋STK俗称三洋厚膜。经过调校的声音和高精度半导体工艺生产过程控制下，不是一般业余DIY玩家可以达到的水平。除了声场和解析力更好以外，低频力度强很多，完全是职业运动员和一般玩家的区别！这些厚膜电路是一直是专门给大品牌音响厂家的定制产品。早期许多著名的工厂用它们来制造功率放大器，如K + H，索尼SONY，松下PANSONIC、建伍KENWOOD ,杰伟士JVC、山水SANSUI、夏普SHARP、\u003cspan style=\"background-color: #ffff00;\"\u003e先锋PIONEER\u003c\/span\u003e、爱华AIWA等差不多全部日本的音响厂家选用，而且沿用了超过二十年，整整影响了一代人，也是我们整整一代人年轻时候听到的带有强烈时代烙印的声音。每每听起都难以忘怀。三洋专门生产功放模块的公司后期被美国安森美公司（ON  semiconductor)收购，收购以后集成了三洋的传统工艺，再加上ON的独特设计，后期的产品更加出彩，至今仍被美国的大公司采用，如 BOSE，如欧洲的真力Genelec! \u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr style=\"box-sizing: inherit;\"\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #e6f6e6;float: none;display: inline;\"\u003e    PAC014A厚膜实际听感很耐听，声音细节、解析力、人声、低频力度均好于其他系列。\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;margin: 1.12em 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 14.4444px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #000000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-style: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-weight: 400;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;letter-spacing: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;orphans: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;text-transform: none;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;white-space: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;widows: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;word-spacing: 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;line-height: 23.3333px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003e  基本参数：\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  供电电压：交流双25V-38V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e输出功率：\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e50W+50W  \u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e8Ω   110W+110W 4Ω 实测持续最大输出功率\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e频       响：20Hz-50kHz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e输入灵敏度：700mV\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e输入阻抗：50K\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e放大倍数：32倍\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e失       真：0.2%\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e尺       寸：155 x 78 x 40MM  长x宽x高\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  重       量\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e：约277g \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e配       件：铜柱螺母*4、输入屏蔽线*1、长螺丝*2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e默认为成品板，出货前已测好，非人为损坏保修3个月\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01vOkkZK1OQBu8Lhr4q_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01mi8vBu1OQBu5CTxuv_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e四颗化工黑金刚5600uF 63V主滤波电容（拆机）\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01viGmoC1OQBu2uxDGC_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN019xBLHE1OQBu9QwhgE_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e板上设有完整的保护电路，输出采用大红环电感和松乐大电流继电器\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01eBLscF1OQBuIsOA6O_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01DNDlF51OQBuFP3WMV_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01eXWdgG1OQBuG74CjZ_!!88221699.jpg\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e全新原盒包装\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01DI2jym1OQBuGbDhBG_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e肉眼可见两对大功率输出管\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN017SMUW71OQBuG0V5uI_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01kZoJ7w1OQBu9BGKHQ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66600355922224,"sku":null,"price":38.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01Xx1Vn01OQBuG9bE7C__88221699.webp?v=1777025340"},{"product_id":"厚膜stk413-420大功率3声道2-1发烧功放板diy成品旧功放升级","title":"Thick-film STK413‑420 high‑power 3‑channel 2.1 audiophile amplifier board – DIY finished board for upgrading old amplifiers.","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN011GDptG1OQBuKdz4lv_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01d3bfT41OQBuJvwRng_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01Oltsj11OQBuIQMwrL_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01xgqEjb1OQBuJvxaT8_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01FrkpLr1OQBuLi3hR3_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01xJPq2q1OQBuIhdkA1_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01STSuxi1OQBuKXNtbL_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01SBpg4m1OQBuMe8auG_!!88221699.jpg\" 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24.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 26.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003eSANYO STK410-030 custom pioneer standard PAC011A thick film power amplifier module 100WX3@6 Europe, the new original fake one penalty ten. Pioneer company looking for SANYO custom thick film power amplifier circuit, all Pioneer company's customized products must be carefully selected and repeatedly compared to determine the circuit structure and sound characteristics. PAC011A is equivalent to SANYO STK410-030, the output power 100WX3@6 Europe, distortion THD0.4%. This series of products sound details, resolution, voice, low frequency strength are better than other series. Module disassembly diagram can see a huge protection chip, and the key parts of the chip are coated with transparent glue protection. Only high-end products in the later stage will do this. It is rare. If you buy it, you will earn it.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;color: #333333;font-size: 14.0px;text-indent: 24.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 26.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #800080;\"\u003eSanyo STK is commonly known as Sanyo Thick Film. Under the control of the tuned sound and high-precision semiconductor process production process, it is not the level that ordinary amateur DIY players can achieve. In addition to better sound field and resolution, the low-frequency strength is much stronger, which is completely the difference between professional athletes and ordinary players! These thick film circuits have always been customized products for big brand audio manufacturers. In the early days, many famous factories used them to manufacture power amplifiers, such as K + H, Sony Sony, Panasonic PANSONIC, Kenwood KENWOOD, JEVIS JVC, Shanshui SANSUI, Sharp SHARP,\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffff00;\"\u003ePioneer PIONEER\u003c\/span\u003eAlmost all Japanese audio manufacturers such as Aihua AIWA use it, and it has been used for more than 20 years. It has influenced a whole generation, and it is also a voice with a strong brand of the times that we heard when a whole generation was young. It is unforgettable every time it sounds. Sanyo, a company specializing in the production of power amplifier modules, was later acquired by ON Semiconductor of the United States. After the acquisition, it integrated Sanyo's traditional craftsmanship. Coupled with ON's unique design, the later products were even more outstanding, and are still used by large companies in the United States, such as BOSE and Genelec in Europe!\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003e\u003cspan\u003e \u003c\/span\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr style=\"box-sizing: inherit;\"\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #e6f6e6;float: none;display: inline;\"\u003eSTK410-030\/PAC011A thick film is actually very durable, with good sound details, analytical power, human voice, and low frequency strength.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;margin: 1.12em 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 14.4444px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #000000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-style: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-weight: 400;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;letter-spacing: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;orphans: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;text-transform: none;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;white-space: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;widows: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;word-spacing: 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;line-height: 23.3333px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eBasic parameters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003ePower supply voltage: AC dual 31V-42V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eOutput power: RMS100W * 3 channels\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e6Ω measured continuous maximum output power\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eFrequency, sound: 10Hz-40kHz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eInput Sensitivity: 730mV\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eInput Impedance: 56K\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eMagnification: 31 times\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eLost, True: 0.4%\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eSize: 152 x 96 x 62MM L x W x H\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eWeight, quantity\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e: about 270g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eAccessories: copper pillar and nut * 4, long screw * 2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eThe default is the finished board, which has been tested before shipment, and the non-human damage is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #000000;font-size: 14.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01dxFafL1OQBwBSBtHq_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01pJmfLC1OQBwAs4wQD_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN010rBSzS1OQBvPdfuJy_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000cd;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eThe materials used are also very particular, and the power supply adopts a high-current rectifier bridge, ruby\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000cd;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eFilter capacitor, the tone is neutral, and the human voice is more moist and delicate. Each channel is equipped with a large red ring output inductance and has a complete protection circuit.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01JdiqFU1OQBw8KaYoU_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01Z4auUY1OQBw9oxo6M_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01NAV5Xi1OQBwC08HZW_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"power amplifier board","offer_id":66600685306160,"sku":"5857573563463","price":30.12,"currency_code":"USD","in_stock":true},{"title":"PCB","offer_id":66600685338928,"sku":"5857573563462","price":15.32,"currency_code":"USD","in_stock":true},{"title":"Transformer","offer_id":66600685371696,"sku":"5688306048049","price":36.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01YPQIDZ1OQBwAjdyY4__88221699.webp?v=1777032378"},{"product_id":"retro-style-classic-japanese-new-thick-film-stk4144mk2-beautiful-sound-hifi-power-amplifier-board-far-exceeds-lm1875","title":"Vintage-style classic Japanese brand new thick-film STK4144MK2 – sweet-sounding Hi-Fi amplifier board, far surpassing the LM1875","description":"\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #000000;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eThe new stock SANYO STK4144MK2 chip, this model is an improved version of the STK41X1 classic series, which is a relatively early product. The design at that time was relatively conservative, the materials used were real and strictly tuned. The design output power was 25W + 25W @8 ohms, and the distortion was THD0.4%. It is not the extreme parameters that necessarily represent a good sound, just like many people still like the sound of courage. The parameter performance is not necessarily high, but the sound is mellow and delicate like old wine, the more delicious it is, so this time I chose a more classic retro design, regardless of the sound and appearance, it is the original.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eThe output power of the STK41X4 series is not too large, and the overall sound quality is between LM1875 and HOOD1969. The sound is mellow and delicate like an old wine. The more you taste, the more delicious it is. It is more suitable for users who like the classic retro sound quality style, especially in the human voice and other aspects. It can bring people a warm and rich listening experience.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN015tvigy1OQBvk8pBqc_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e \u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01yUDX3N1OQBuwP09XL_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"box-sizing: border-box;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffff00;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003ebasic\u003c\/span\u003eParameter:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eOutput power:\u003c\/strong\u003e25W+25W 4Ω   18W+18W 8Ω\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eSupply voltage:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003eAC, dual voltage 18V~ 28V\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eDistortion THD:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e0.4%\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eFrequency Response:\u003c\/strong\u003e20Hz-50KHz\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eAmplification:\u003c\/strong\u003e97 times\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003einput impedance\u003c\/strong\u003e:1KΩ\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eInput sensitivity:\u003c\/strong\u003e0.12V\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eOutput Impedance:\u003c\/strong\u003e4-8Ω\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eDimensions:\u003c\/strong\u003e143 Width * 52 Height * 58 Depth mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eWhole board weight:\u003c\/strong\u003eAbout 170g\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eAccessories:\u003c\/strong\u003eCopper column nut * 4, input shielding wire * 1, long screw * 2\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 24.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003eThe default is the finished board, which has been tested before shipment, and the non-human damage is guaranteed for 3 months.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #000000;font-size: 14.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01GWhMwJ1OQBvkvSXKM_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01e6ka4R1OQBvkvPzKb_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Finished board","offer_id":66600703230256,"sku":"5836674515716","price":20.78,"currency_code":"USD","in_stock":true},{"title":"PCB empty board","offer_id":66600703263024,"sku":"5836674515715","price":16.81,"currency_code":"USD","in_stock":true},{"title":"120W ring cow, double 22V four wire","offer_id":66600703295792,"sku":"5835070586139","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01zQMXyM1OQBvjWTOhv__88221699.webp?v=1777032546"},{"product_id":"classic-single-ended-otl-circuit-stk-beautiful-sound-thick-film-stk437-power-amplifier-board-diy-finished-product-board-strong-taste-sweet-voice","title":"STK437 amplifier board – classic single-ended OTL circuit, STK sweet-sounding thick-film, DIY finished board","description":"\u003cul style=\"box-sizing: border-box;margin-bottom: 8.0px;margin-top: 0.0px;padding-left: 20.0px;color: #222222;font-size: 16.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\n\t\u003cli style=\"box-sizing: border-box;font-weight: 400;list-style-type: disc;padding-left: 4.0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box;font-weight: 600;\"\u003epower output\u003c\/strong\u003eSTK437 has a channel output power of 10W (TDH = 0.2%) at a typical operating voltage of 33V, which has a certain power output capability and can meet some audio playback scenarios that do not require particularly high power\u003cspan\u003e \u003c\/span\u003e.\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box;font-weight: 400;list-style-type: disc;margin-top: 8.0px;padding-left: 4.0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box;font-weight: 600;\"\u003esound quality characteristics\u003c\/strong\u003e:\n\t\u003cul style=\"box-sizing: border-box;margin-bottom: 0.0px;margin-top: 8.0px;padding-left: 20.0px;color: initial;\"\u003e\n\t\t\u003cli style=\"box-sizing: border-box;font-weight: 400;color: initial;list-style-type: circle;padding-left: 4.0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box;font-weight: 600;\"\u003eLow distortion\u003c\/strong\u003eTotal harmonic distortion (THD) is low, like only 0.2% under the above typical conditions, which means that it can accurately restore the audio signal, play the sound is relatively pure, less obvious distortion phenomenon, for the pursuit of high fidelity sound quality is an important indicator for users.\u003c\/li\u003e\n\t\t\u003cli style=\"box-sizing: border-box;font-weight: 400;color: initial;list-style-type: circle;margin-top: 8.0px;padding-left: 4.0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box;font-weight: 600;\"\u003eSound reduction is better\u003c\/strong\u003eIt can amplify the audio signal more accurately, perform more balanced in terms of frequency response, and present the various frequency components of the audio signal relatively completely, so that the played sound is closer to the original audio signal in terms of timbre, tone, etc., giving people a more realistic auditory experience.\u003cspan style=\"font-size: 16.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;display: inline;float: none;\"\u003e:\u003c\/span\u003e\n\u003c\/li\u003e\n\t\t\u003cli style=\"box-sizing: border-box;font-weight: 400;color: initial;list-style-type: circle;padding-left: 4.0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box;font-weight: 600;\"\u003eHigh audio transparency and level of detail\u003c\/strong\u003eSince the OTL circuit does not use a protection circuit, the signal transmission path is more concise, providing a purer audio signal, making the STK437 generally have a higher audio transparency and level of detail, which can more clearly show subtle changes in music\u003cspan\u003e \u003c\/span\u003e.\u003c\/li\u003e\n\t\t\u003cli style=\"box-sizing: border-box;font-weight: 400;color: initial;list-style-type: circle;margin-top: 8.0px;padding-left: 4.0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box;font-weight: 600;\"\u003eGood low-frequency control and dynamic response\u003c\/strong\u003eThe key goal of the OTL circuit design is to make the output impedance as low as possible to match the impedance of the loudspeaker. This way, the audio signal can be better transmitted to the loudspeaker, and the STK437 can provide better low-frequency control and dynamic response, making the bass sound fuller and more powerful. It can also cope better when playing large dynamic music\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\t\t\u003cli style=\"box-sizing: border-box;font-weight: 400;color: initial;list-style-type: circle;margin-top: 8.0px;padding-left: 4.0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box;font-weight: 600;\"\u003eBetter immersion\u003c\/strong\u003eSTK437 is usually able to provide a better immersive stage effect, that is, the audio signal is close to the speaker position, as if the music is coming directly from the speaker, rather than from behind the speaker, allowing the listener to have a more immersive feeling\u003c\/li\u003e\n\t\u003c\/ul\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01vl2Pjz1OQBtwfHLPH_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e    \u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eParameter:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003ePower supply voltage: AC single 23V-33V recommended 30-60W transformer\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003e\u003cspan\u003eFrequency response: 15Hz-45KHz\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003eInput Sensitivity: 300mV\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003eInput impedance: 220K\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003eMagnification: 4Ω 32 times 8Ω 33 times\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003eMeasured power: 4Ω 18W x 2 8Ω 12.5W x 2\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"\"\u003e\u003cspan\u003eDimensions: 105 L * 63 W * 62 H mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eProduct Net Weight: 150g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003e \u003c\/span\u003e\u003c\/strong\u003e \u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #000000;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003eDIY is very simple, no debugging required. DIY, upgrading and modifying speakers are all good choices.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e \u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eRecommended match\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003e2-5 inch small bookshelf box or unit, accessories: copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eThe finished board is tested and shipped, non-human damage, and the warranty is 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01zU8rxa1OQBtw4vVMJ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01s1kPGq1OQBtmPIaR9_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01uQfDXI1OQBtrgJqcA_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01cKoxXI1OQBtv2Duh5_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01IU5wHL1OQBtwhKvhj_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66600740028720,"sku":null,"price":29.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01vl2Pjz1OQBtwfHLPH__88221699.webp?v=1777032861"},{"product_id":"classic-thick-film-stk4042ii-high-power-amplifier-board-hifi-enthusiast-grade-finished-board-mono-80w","title":"Classic thick-film STK4042II high-power amplifier board – Hi-Fi audiophile-grade finished board","description":"\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #800080;\"\u003eSanyo STK is commonly known as Sanyo Thick Film. Under the control of the tuned sound and high-precision semiconductor process production process, it is not the level that ordinary amateur DIY players can achieve. In addition to better sound field and resolution, the low-frequency intensity is much stronger, which is completely the difference between professional athletes and ordinary players! These thick film circuits have always been customized products for big brand audio manufacturers. In the early days, many famous factories used them to manufacture power amplifiers, such as K + H, Sony Sony, Panasonic PANSONIC, KENWOOD, JEVIS JVC, Shanshui SANSUI, Sharp SHARP, Pioneer PIONEER, Aihua AIWA, etc. Almost all Japanese audio manufacturers use them, and they have been used for more than 20 years, which has influenced a whole generation. It is also a sound with a strong era brand that our entire generation heard when they were young. It always sounds unforgettable. Sanyo, a company specializing in the production of power amplifier modules, was later acquired by ON Semiconductor of the United States. After the acquisition, it integrated Sanyo's traditional craftsmanship, coupled with ON's unique design, and the later products were even more outstanding. They are still used by large companies in the United States, such as BOSE and Genelec in Europe!\u003c\/span\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eFortunately, I came across a batch of new inventory of the power amplifier module STK496-090 produced by Sanyo SANYO in the later stage, which is a more classic sound of the old Sanyo. Unfortunately, in the later stage, coinciding with the vigorous development of the Internet and the large-scale popularity of various portable devices (especially large-screen touch-screen mobile phones), many people gradually forgot these high-performance desktop devices. Those once famous audio manufacturers had to change their product direction, making these customized products dusty in the original SANYO packaging factory warehouse in the Philippines, staying for more than ten years.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e   \u003cspan\u003eThe board is a simplified version, with rectifier and filter capacitors removed, direct DC positive and negative voltage input, achieving a very small size.\u003c\/span\u003e\u003cspan style=\"outline: none;background-color: #ffff00;\"\u003eDIY is also very simple, the whole board has been tested, no debugging is required; the output does not have a protection circuit by default, and is added according to personal usage; this product is a good choice for DIY, upgrading and modifying speakers.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSTK4042 module for mono 80W 8Ω output, stereo requires two boards\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSupply voltage: DC ± 45V to ± 63V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eOutput power: 80W8Ω (measured undistorted power under DC60V power supply)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSize: 59.5 * 41mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eAccessories: Copper column nut * 4, screw * 2\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThe finished board is tested and shipped, and a radiator needs to be added after arrival. It is not artificially damaged, and the warranty is 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01ywuFVo1OQBoYJWwJU_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01OPjhNV1OQBoQLtGmk_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN0193ITmk1OQBoWd1O5j_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e\u003cspan style=\"outline: none;background-color: #ffff00;\"\u003eDIY is very simple, the whole board has been tested, no need to debug; DIY, upgrading and modifying speakers are all good choices.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003ePower supply voltage: AC dual 32-44V filter capacitor default 63V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eOutput power: 8\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e0W 8Ω (measured undistorted power under DC60V power supply)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSize: 113 * 64mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eWeight: 191g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eAccessories: Copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"outline: none;margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e    \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"outline: none;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThe finished board is tested and shipped, and a radiator needs to be added after arrival. It is not artificially damaged, and the warranty is 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01HyoA1m1OQBoS24CsM_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01UN2KVW1OQBoWd40HA_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01qQn7Ix1OQBoZ8r2pZ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01DcoxC01OQBpCCTWbT_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01rILhng1OQBoYaNA0K_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01qYa2Hd1OQBoerK6hY_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK4042 power amplifier board","offer_id":66600747008304,"sku":"5336906767195","price":29.79,"currency_code":"USD","in_stock":true},{"title":"STK4042 Power Amplifier Board - DC Power Supply","offer_id":66600747041072,"sku":"5336906767194","price":19.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01h5uN7B1OQBoV0JTlU__88221699_5a2099f2-5d9e-451d-860a-d7c97bbe8b03.webp?v=1777032922"},{"product_id":"high-and-low-voltage-power-supply-class-h-stk419-110-thick-film-power-amplifier-circuit-high-power-hifi-power-amplifier-finished-board","title":"Class H with high-low voltage power supply – STK419-110 thick-film amplifier – high-power Hi-Fi finished amplifier board","description":"\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #800080;\"\u003eSanyo STK is commonly known as Sanyo Thick Film. Under the control of the tuned sound and high-precision semiconductor process production process, it is not the level that ordinary amateur DIY players can achieve. In addition to better sound field and resolution, the low-frequency intensity is much stronger, which is completely the difference between professional athletes and ordinary players! These thick film circuits have always been customized products for big brand audio manufacturers. In the early days, many famous factories used them to manufacture power amplifiers, such as K + H, Sony Sony, Panasonic PANSONIC, KENWOOD, JEVIS JVC, Shanshui SANSUI, Sharp SHARP, Pioneer PIONEER, Aihua AIWA, etc. Almost all Japanese audio manufacturers use them, and they have been used for more than 20 years, which has influenced a whole generation. It is also a sound with a strong era brand that our entire generation heard when they were young. It always sounds unforgettable. Sanyo, a company specializing in the production of power amplifier modules, was later acquired by ON Semiconductor of the United States. After the acquisition, it integrated Sanyo's traditional craftsmanship, coupled with ON's unique design, and the later products were even more outstanding. They are still used by large companies in the United States, such as BOSE and Genelec in Europe!\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis board is designed according to the concept of comparative fever, and the materials used are carefully selected. The power amplifier module can be installed horizontally or vertically, and it is easier to achieve multi-channel functions with a suitable radiator.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e   \u003c\/span\u003e\u003c\/strong\u003e \u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eSound performance: The overall tone is warm, the sound is relatively soft, the treble extension is high but not harsh, the bass is deep enough and elastic, and it will not be mixed or sloppy. Sanyo thick film is a circuit between integrated and discrete power amplifiers. Fine workmanship and excellent craftsmanship are stronger than 3886,7294, and it is difficult for general DIY players to achieve this level.\u003c\/strong\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003e   \u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eSupply voltage:\u003c\/strong\u003e\u003c\/strong\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eAC double 22V~ 33V\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eOutput power: 100WX2@4 Ω 75WX2@8 Ω\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eFrequency response: 15Hz-45KHz\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eCircuit board size: 110 wide X88 long\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eFinished plate net weight: about 213g\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eThe finished board is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01spV4Gk1OQBWeNIMB7_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01SeuJ0f1OQBWix9CBm_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01wwd4SM1OQBt70GlLB_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01mvOegw1OQBt9Ezyde_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01PXiJeb1OQBt4q0tGB_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01QF19pa1OQBt9F0a2h_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN0156pVrD1OQBt6BwHtV_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eSupply voltage:\u003c\/strong\u003e\u003c\/strong\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eHigh voltage double 35-25, low voltage double 25-18 (can be co-located) Under normal circumstances, the secondary needs 5-6 power supply lines\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eOutput power: 50WX2@6 Ω THD 0.2%\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eCircuit board size: 118 wide X45 high X106 long\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eWeight: 0.15KG\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eThe finished board is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01sCyXMd1OQBszDOhQJ_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01WoFkCL1OQBt6zJ1BC_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN015WldCz1OQBt6j2dt1_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Version 1","offer_id":66600756674864,"sku":"5682003854474","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Version 2","offer_id":66600756707632,"sku":"5682003854475","price":25.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01wwd4SM1OQBt70GlLB__88221699.webp?v=1777033007"},{"product_id":"stk490-310-070-thick-film-module-60wx2-hifi-power-amplifier-finished-board-diy-upgrade-ultra-lm1875","title":"STK490-310 \/ STK490-070 thick-film module – 60W×2 Hi-Fi amplifier finished board, a DIY upgrade surpassing the LM1875","description":"\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #008080;\"\u003eSanyo Semiconductor Co., Ltd. (a member company of ON Semiconductor) is a semiconductor manufacturing company with outstanding power supply device technologies, such as small package technology, energy-efficient switching technology, high-density packaging technology, etc., as well as world-class YI analog technology. Several analog-related assets include a wide range of process technology, analog design technology, skilled analog engineers, and specially designed and manufactured energy-saving and environmentally friendly devices, such as hybrid integrated circuits for inverters. Sanyo's core components include discrete circuits, general-purpose analog large-scale integrated circuits, ASSPs, and hybrid integrated circuits, which are widely used in a variety of products, such as personal computers, printers, cable TVs, mobile phones, audio-visual equipment, gaming equipment, car audio systems, and air conditioners.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis series of products are class H circuits powered by high and low voltages.\u003c\/span\u003e\u003c\/strong\u003e \u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eClass H chip is powered by two sets of voltages of high voltage and low voltage, and automatically switches smoothly according to different output power. Class H power amplifier circuit is a relatively late product, and its design indicators put forward higher requirements for energy saving, signal to noise ratio, sound field and other indicators. This series of thick film chips not only have higher design and production parameters, but also have better hearing. This power amplifier can achieve satisfactory results by promoting general bookshelves or floor speakers.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis board is designed according to the concept of comparative fever, and the materials used are carefully selected. The power amplifier module can be installed horizontally or vertically, and it is easier to achieve multi-channel functions with a suitable radiator.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e   \u003c\/span\u003e\u003c\/strong\u003e \u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eSound performance: The overall tone is warm, the sound is relatively soft, the treble extension is high but not harsh, the bass is deep enough and elastic, and it will not be mixed or sloppy. Sanyo thick film is a circuit between integrated and discrete power amplifiers. Fine workmanship and excellent craftsmanship are stronger than 3886,7294, and it is difficult for general DIY players to achieve this level.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eSupply voltage:\u003c\/strong\u003e\u003c\/strong\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eHigh voltage double 33-22 (AC), low voltage double 22-15 (AC) (can be shared) Under normal circumstances, the secondary needs 5-6 power lines\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eOutput power: 60WX2@6 Ω THD 0.1%\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eCircuit board size: 140 * 85mm\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;\"\u003e\u003cstrong style=\"line-height: 36.0px;\"\u003eWeight: 0.15KG\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cfont color=\"#0000ff\" face=\"kaiti_gb2312\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cb\u003eThe finished board is guaranteed for 3 months.\u003c\/b\u003e\u003c\/span\u003e\u003c\/font\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01uVvVZv1OQBWhSrl8Y_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01yAhpEP1OQBWmcgPAl_!!88221699.png\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01urHRvt1OQBWhsOze3_!!88221699.png\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01IwFbu41OQBWkQKE5N_!!88221699.png\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01W3N4mp1OQBWmcgTIV_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01tLAyEq1OQBWiUVSVJ_!!88221699.png\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01OQGmg11OQBWkQJM10_!!88221699.png\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01hzr3IO1OQC08w3zmm_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eSTK490-070 finished board upgrade old power amplifier or active speakers are very good choices\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003ePower supply voltage: AC dual 18V-26V\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eOutput power: 40WX2@8 Ω THD 0.1% measured\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eCircuit board size: 140 * 82 * 42mm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eWeight: about 180g\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eAccessories: Copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eThe finished board is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01EUDbCP1OQBweZJUoI_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01poDAL81OQBwegXTnR_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eOutput terminal interface polarity sequence: left channel negative-positive, right channel positive-negative (near the relay terminal is positive)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01ZO7FyF1OQBwg5nake_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK490-310 finished board","offer_id":66600772141360,"sku":"5902867914980","price":26.36,"currency_code":"USD","in_stock":true},{"title":"STK490-070 finished board","offer_id":66600772174128,"sku":"5902867914981","price":23.78,"currency_code":"USD","in_stock":true},{"title":"STK490-310 module","offer_id":66600772206896,"sku":"5902867914982","price":21.14,"currency_code":"USD","in_stock":true},{"title":"STK490-070 module","offer_id":66600772239664,"sku":"5902867914983","price":18.67,"currency_code":"USD","in_stock":true},{"title":"STK490-070 PCB empty board","offer_id":66600772272432,"sku":"5902867914984","price":16.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01EUDbCP1OQBweZJUoI__88221699.webp?v=1777033138"},{"product_id":"full-series-thick-film-power-amplifier-board-stk4040-4191-4234-4151-465-and-other-supporting-diy-pcb-boards","title":"Full series of thick-film amplifier boards: STK4040, 4191, 4234, 4151, 465, etc., with matching DIY PCB boards","description":"\u003cp\u003e\u003cspan style=\"color: #ff8c00;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eIn order to reduce the DIY threshold for fans to play, reduce the cost of development and proofing, this link will constantly update some different types of thick film module circuit empty board PCB, commonly used STK4234, STK4191, STK4191, STK437, STK3048 push SAP15, etc. These circuit boards are all in production and sales, and have been tested. As long as you have a suitable module, you can buy an empty board and install it, and you can experience the rich music flavor of thick film in the 8-90's.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eDescription:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e1, DIY requires a certain electronic foundation\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e2. When installing, you need to choose a capacitor suitable for voltage resistance according to the voltage used\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e3, PCB empty board is not covered by warranty\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e4. Each circuit board will be accompanied by parameters and module peripheral circuit diagrams, and the voltage can be selected according to the parameters\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN011PuB8T1OQBvQkrdYA_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN013mql9S1OQBvPvswAn_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN017plzUl1OQBvTxXEC5_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01QyupXU1OQBvSQ4m7N_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01nR6hP91OQBvUktcVi_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK415-130 circuit board","offer_id":66601369108784,"sku":"5650008312574","price":16.67,"currency_code":"USD","in_stock":true},{"title":"STK4205~ 4235 General Purpose Circuit Board","offer_id":66601369141552,"sku":"5817948414535","price":14.84,"currency_code":"USD","in_stock":true},{"title":"STK4196 General Purpose Circuit Board","offer_id":66601369174320,"sku":"5656607101460","price":15.51,"currency_code":"USD","in_stock":true},{"title":"STK433-260 circuit board","offer_id":66601369207088,"sku":"5654462172494","price":14.84,"currency_code":"USD","in_stock":true},{"title":"STK412-530 circuit board","offer_id":66601369239856,"sku":"5824083959755","price":15.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01BpU9gT1OQBvP8Nvnh__88221699.webp?v=1777037379"},{"product_id":"stk433-330-130-thick-film-module-hifi-fever-power-amplifier-finished-board-150w-150w-stereo","title":"STK433-330\/130 thick-film module hi-fi audiophile amplifier finished board – 150W+150W stereo","description":"\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;float: none;display: inline;\"\u003eSTK433-330 and STK433-130 are thick film power amplifier modules produced by Sanyo. They were originally used in Yamaha RX-V371 combined power amplifiers. They are 3-channel and 2-channel AB class modules respectively. The maximum output power can reach 150W@6 Ω. STK433-130 signal to noise ratio is as low as 0.01%, usually used for stereo. Sound shows good results,\u003c\/span\u003e\u003cspan style=\"font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;float: none;display: inline;\"\u003eThe medium and high frequency characteristics are good, the frequency response can reach 50KHz, the resolution is strong, the separation of human voice and musical instrument is excellent, and the low frequency is solid.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eThis product is a power amplifier board developed based on STK433-330 and STK433-130. The power amplifier board does not contain modules.\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"box-sizing: inherit;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eNo accessories included.\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eWithout heat dissipation,\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eYou need to buy modules and radiators separately to use, no debugging, plug and play.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eOutput power:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eSTK433-330 3x150W@6 distortion 0.2% 20Hz-50kHz\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eAC Dual 30-45V;\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eSTK433-130 2x150W@6 Distortion 0.01% 20Hz-50kHz\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eAC Dual 24-36V;\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003e    STK433-330   180mm x 100mm   400g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003e    STK433-130   132mm x 84mm  250g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eInput Sensitivity: 1V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eInput Impedance: 56K\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eOutput impedance: 4-8Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003e   \u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;background-color: #ff8c00;\"\u003eNote: Pay attention to the internal voltage of the capacitor when using high voltage.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eThis product is not artificially damaged and is guaranteed for 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThe picture below shows the real shot of the STK433-330 power amplifier board.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01d8AI3s1OQByXlDcOi_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01SIixPc1OQByWFc64q_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01DRJxu71OQBySU34Bx_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThe picture below shows the real shot of the STK433-130 power amplifier board.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01bT7iqd1OQByYvM4BA_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01zhSsKH1OQByRKRnz6_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01aNiYdO1OQByZcADG6_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eThe STK433-270 module is three-channel 60W, and the default full-frequency output signal. When used as a subwoofer, the bass channel needs to be\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eConnect the low pass signal input.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003ePower supply voltage: AC dual 28-35V,\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #0000ff;\"\u003eOutput power: 3X60W@6 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eSize: 137 * 85mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eAccessories: Copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003e   \u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;background-color: #ff8c00;\"\u003eNote: The filter capacitor defaults to 50V withstand voltage, and the capacitor needs to be replaced if it is higher than 50V power supply.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eThe finished board is tested and shipped without heat dissipation, and an additional radiator needs to be added.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;outline: none;color: #0000ff;\"\u003eThis product is not artificially damaged and is guaranteed for 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 1.12em 0.0px;outline: none;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN018KmSPg1OQByXLLLXM_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK433-130 power amplifier board (excluding modules)","offer_id":66601452568880,"sku":"5983628382907","price":26.34,"currency_code":"USD","in_stock":true},{"title":"STK433-330 power amplifier board (excluding modules)","offer_id":66601452601648,"sku":"5983628382908","price":28.95,"currency_code":"USD","in_stock":true},{"title":"STK433-270 power amplifier board (including modules)","offer_id":66601452634416,"sku":"5817620444577","price":27.39,"currency_code":"USD","in_stock":true},{"title":"STK433-130 power amplifier board (including modules)","offer_id":66601452667184,"sku":"5976937828989","price":31.91,"currency_code":"USD","in_stock":true},{"title":"STK433-330 power amplifier board (including modules)","offer_id":66601452699952,"sku":"5976937828990","price":35.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN010ja7xB1OQByXR2D3I__88221699.webp?v=1777039616"},{"product_id":"全新库存后期大功率厚膜stk404-120发烧级单声道功放板成品","title":"New old stock, later version high-power thick-film STK404-120 audiophile monaural amplifier board – finished","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01xdMog71OQBz44gpuR_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01i3lklM1OQBz4xFMjm_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01IA8p4W1OQBz4xpY7C_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN018SrJ8a1OQBz4xE5k8_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01m8BJdX1OQBz4Ro6yy_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01Hd4mg41OQBz4xrMMo_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01k34VhV1OQBz3pVxVp_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN014fjHm71OQBz4lQmkx_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01nvJCcP1OQBz3pSba6_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01UUpmtZ1OQBz4kNyPc_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01zP9Cfq1OQBz4MSSen_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01LxkfXa1OQBz3pULhs_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/TB2DzRghItnpuFjSZFvXXbcTpXa_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01DQpbap1OQBz2Rq3j1_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01VWnDo51OQBz2z1jYC_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01gVKN9i1OQBz2z6EOx_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01aCqEHo1OQBz44aSKR_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01SymMQR1OQBz3mMva2_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01WFc4Cc1OQBWbbS2xV_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66601456337200,"sku":null,"price":35.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01DQpbap1OQBz2Rq3j1__88221699.webp?v=1777039701"},{"product_id":"thick-film-stk4151-4191-module-universal-hifi-level-fever-stereo-diy-power-amplifier-finished-board","title":"Thick-film STK4151\/4191 universal module – hi-fi audiophile stereo DIY finished amplifier board","description":"\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eIn the late 1980s and early 1990s, Sanyo's STK series thick film power amplifier modules appeared in a large number of Japanese combination audio on various brands of machines, attracting a large number of people who had just become wealthy.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\n\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThe difference between the LM1875\/3886 and STK series chips is that, in terms of technology, the LM series is small in size and easy to make, but the real and fake products are uneven; while the thick film chip is composed of multiple imported precision components, as well as sterling silver wire jumper integration (non-fool module), the internal use of very hot constant current circuits and paired high-power triodes; (not to mention the amateur situation, even if there is a certain scale of factories, it is difficult to obtain high-precision power amplifier triodes in batches under the current circumstances. At present, our domestic audio industry Due to these key components, it is still difficult to make a sound.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\n\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eBut on the market level, the two are different for DIY. LM1875 has a large playability space and a small space. In terms of tone, LM1875 is balanced and suitable for entry;\u003cspan style=\"color: #ee82ee;\"\u003e\u003cstrong\u003eIn contrast, the thick tone is warmer and stronger; driven by the market, the LM series is more familiar with it at the entry level, while the obscure STK thick film is an unattainable dream in the eyes of the older generation of fans.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e       \u003cspan style=\"color: #0000ff;\"\u003eThis product is based on the most classic two modules, STK4151 *\/STK4191 *, which are also common modules in Japanese combined machines. This module accounts for a large proportion in the market, but DIY restrictions cannot be achieved. Under the requirements of many burners, this STK4 ** 1 general-purpose power amplifier board has been developed, which can be compatible with a variety of modules and is easy to use. It can be compatible with various modules by modifying some parameters according to requirements.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN017bopjB1OQBydrIXAk_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eBasic parameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eModel Number: PAM-STK41xx\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eSupply voltage: refer to the table below\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eOutput power: refer to the table below\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eFrequency Response: 20-20kHz\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eInput Impedance: 56KΩ\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eOutput impedance: 4-16Ω\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eSize: 70 x 170mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eNotes:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e1, power supply voltage range\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e2, capacitor withstand voltage\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e3, module pin arrangement order\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e4, this product is a work in progress, does not contain thick film module, the default is equipped with all parameter components, can be welded according to different modules corresponding parameter components, parameter table refer to the following figure\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e5, this product is work in progress, not covered by warranty\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e \u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eParameter comparison table:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01gHPFDj1OQBypW29YV_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01PcQt4L1OQBydpFFuq_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01SZba1Y1OQByePakv0_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01LIeP4Q1OQBydOq9jI_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eGeneral model comparison table:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e  \u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN014UGcFH1OQByf7waK1_!!88221699.jpg\" style=\"max-width: none;width: 730.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01mIj05w1OQBydhUcfg_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01BfEwLe1OQByeovdXj_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"PAM-STK41xx power amplifier board (without module)","offer_id":66601466298672,"sku":"5988926078289","price":25.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN017bopjB1OQBydrIXAk__88221699.webp?v=1777039913"},{"product_id":"fever-design-stk433-760-thick-film-vocal-hifi-power-amplifier-kit-finished-board-why-play-lm1875-again","title":"Audiophile-designed STK433-760 thick-film vocal Hi-Fi amplifier kit \/ finished board – why still bother with the LM1875","description":"\u003cp style=\"margin-top: 1.12em;margin-right: 0.0px;margin-bottom: 1.12em;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01IkOAL11OQBx1LXIlK_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eOption description:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e1. Set of parts: 58 yuan is the spare parts that need to be welded by yourself.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e2. Finished plate: The finished plate is 73 yuan, and the welded plate can be directly installed.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #800080;\"\u003eSanyo STK is commonly known as Sanyo Thick Film. Under the control of the tuned sound and high-precision semiconductor process production process, it is not the level that ordinary amateur DIY players can achieve. In addition to better sound field and resolution, the low-frequency strength is much stronger, which is completely the difference between professional athletes and ordinary players! These thick film circuits have always been customized products for big brand audio manufacturers. In the early days, many famous factories used them to make power amplifiers, such as K + H, Sony, Panasonic, Kenwood, Jervis, Shanshui, Sharp, Pioneer, Aihua AIWA, etc. Almost all Japanese audio manufacturers used them, and they have been used for more than 20 years. It has influenced a generation, and it is also a sound with a strong brand of the times that our entire generation heard when they were young. It is always unforgettable. Sanyo, a company specializing in the production of power amplifier modules, was later acquired by ON Semiconductor of the United States. After the acquisition, it integrated Sanyo's traditional craftsmanship, coupled with ON's unique design, and the later products were even more outstanding. They are still used by large companies in the United States, such as BOSE and Genelec in Europe!\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01TCdDvN1OQBrwNJxbz_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eI was fortunate to encounter the power amplifier module STK433-260 produced by Sanyo SANYO in the later stage of batch new inventory. It is said that this earth trademark package gray shell is the product after ON semiconductor (ON Semiconductor) acquired Sanyo's production line. Among them, ON Semiconductor's design and process were integrated. The appearance of the products produced at that stage changed the tradition of the original black ugly shell of the old Sanyo, becoming exquisite and meticulous, and the internal workmanship was also greatly improved. The objective hearing is far beyond the old Sanyo. It is a pity that only a few of the products at that time can still be seen today. At that time, with the vigorous development of the Internet and the large-scale popularization of various portable devices (especially large-screen touch-screen mobile phones), many people gradually forgot about these high-performance desktop devices. Those former well-known audio manufacturers had to change their product direction, making these customized products dusty in the original SANYO packaging factory warehouse in the Philippines for more than ten years.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01OigVIo1OQBs5UOwuV_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eAfter getting the test, it was found that this module still has a relatively large potential, and the actual power is also 50WX2@6 Ω, THD = 0.2%. The module was originally a three-channel design, and this circuit only uses two of them. The recommended working voltage is plus or minus 37V, and the maximum working voltage should not exceed plus or minus 40V.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe main filter capacitor of this product is the original \"Nitsu\" in Japan.\u003c\/span\u003e\u003c\/strong\u003e \u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eNitsuko used disassembly brand capacitor 63V7000UF\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe components and ports on the kit PCB are clearly marked, and as long as they are installed correctly, it is basically a success.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003ePower supply voltage AC: AC dual 22-28V,\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eDimensions: width 133, height 41, depth 73mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eProduct weight: about 123g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: 50W measured\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01juNGPO1OQBWnjXM3r_!!88221699.png\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01Xs1pYM1OQBWrBTiZO_!!88221699.png\" style=\"max-width: none;width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eWiring diagram, take STK433-760 as an example:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01r9u5av1OQBs24XCS8_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eDetail display:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01YYxEYJ1OQBs4XXumx_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01J2bGPT1OQBs74nasL_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01QDk3wx1OQBs5QEk8N_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01jAySng1OQBwhfluJD_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK433-260 kit","offer_id":66601480552752,"sku":"4635060519863","price":22.49,"currency_code":"USD","in_stock":true},{"title":"STK433-260 finished board","offer_id":66601480585520,"sku":"4635060519862","price":25.72,"currency_code":"USD","in_stock":true},{"title":"STK433-760 finished board","offer_id":66601480618288,"sku":"5423128233359","price":25.34,"currency_code":"USD","in_stock":true},{"title":"STK402-100 finished board","offer_id":66601480651056,"sku":"5423128233360","price":27.36,"currency_code":"USD","in_stock":true},{"title":"STK488-010 finished board","offer_id":66601480683824,"sku":"5423128233361","price":26.07,"currency_code":"USD","in_stock":true},{"title":"STK402-240 finished board","offer_id":66601480716592,"sku":"5737506557037","price":23.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01kuI7Xv1OQC2eFu2kw__88221699.webp?v=1777040228"},{"product_id":"stk3048-driver-stk6153-classic-audiophile-grade-combined-thick-film-high-power-amplifier-board-finished-product","title":"STK3048-driven STK6153 classic audiophile-grade combination thick-film high-power amplifier board – finished","description":"\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan\u003e   \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 28.0px;\"\u003e\u003cstrong\u003e\u003cspan\u003eSTK3048 push SAP16N\/P power amplifier board, click the picture to view the details\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003ca href=\"http:\/\/item.taobao.com\/item.htm?id=680844786280\"\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01FkCiYw1OQBsNX5Zuo_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01iNOSZD1OQBrgb77NY_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e  \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan\u003e       \u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThe thick film STK3048 pushes the STK6153 power amplifier circuit as a golden plaything in the 1990s. Its sound is slender and transparent, with a strong low frequency, a medium sound with a unique taste of thick film, small distortion, and a large dynamic range. It was very popular among enthusiasts and enthusiasts at that time.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eSTK3048 is a pre-stage voltage amplification integrated circuit; STK6153 is a post-stage current amplification integrated circuit. STK3048 is a two-channel single-column thick film package with two stages inside. The input stage is a differential amplifier with protection. The resistor-capacitor series phase compensation network of the collector prevents the input stage from transient distortion due to burst signals. A set of mirror current sources is connected between the two collectors. The main voltage amplifier stage is a common-base and common-emitter circuit, and the upper tube amplifies the signal wideband and provides impedance matching for the direct coupling between the input and output stages; the lower tube linearly outputs the amplified current of the upper tube to reduce the open-loop distortion of the stage and provide a larger excitation power to the subsequent stage. The two-stage amplifiers are supplemented by a constant current source as a load, which has strong power supply ripple suppression.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eSTK6153 is a foot mono single-row thick film package, which integrates constant voltage source bias, unadvanced propulsion and unadvanced composite current amplification circuits. It adopts a fully complementary symmetrical structure, with excellent characteristics such as high speed, high precision, high power, and low noise. Due to the built-in bias of the constant voltage source, the unadvanced high-power transistor is always in the best working state and has excellent temperature compensation. The complementary output of the thick film block is designed as an inverted Darlington composite circuit, which is output in the form of an open collector circuit, which can reduce the output impedance.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eCircuit features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e  ● \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eClassic thick film combination STK3048 push STK6153\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e  ● \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eDC midpoint voltage servo, the midpoint voltage is almost zero\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e  ● \u003c\/span\u003e\u003c\/span\u003e\u003cstrong style=\"color: #ff0000;font-size: 12.0px;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eCurrent negative feedback\u003c\/span\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e  ● \u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"color: #ff0000;font-weight: bold;font-size: 20.0px;\"\u003eTwo 10000uF50V original Ruby Rubycon rectifier filter capacitors\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e  ● \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eWith horn protection circuit, high current Omron relay\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e  ● \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eWith high-performance op amp feedback volume control circuit to eliminate the influence of resistance potentiometers\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eParameter:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003esupply voltage\u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e:                             \u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eAC Dual 18V-33V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eoutput power\u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e:                             \u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e85W 8Ω   100W 4Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eMaximum signal input: 5V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003emagnification\u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e:                             \u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e38.2 times\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eFrequency response: 25Hz-20kHz\/± 2dB\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eLeft and right channel separation: 40dB\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eTHD + N (Harmonic Distortion + Noise): 0.05%\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eoutput load\u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e:                             \u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e4-16Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eoutput channel\u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e:                             \u003c\/span\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e2 channel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eSize: 153.72 * 101.65mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eWeight: 275g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThe finished board is tested and shipped, non-human damage, and the warranty is 3 months.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThe use is very simple, the whole board has been tested, no need to debug, just add a transformer and radiator to make a sound, the old power amplifier, the speaker modification, the effect is much better than the general thousand yuan power amplifier, the real cost of small money to do big things.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01JxmnyK1OQBrgCx0i1_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eHigh current Omron relay, truly achieving zero loss, escorts the fever amplifier circuit\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01mznqiR1OQBriFTTSC_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66601486156080,"sku":null,"price":34.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01pOaGip1OQBriKei9M__88221699.webp?v=1777040340"},{"product_id":"gc-version-lm1875-dual-core-parallel-amplifier-board-kit-double-sided-immersed-gold-board","title":"GC version LM1875 dual-chip parallel amplifier board kit – double-sided immersion gold PCB","description":"\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThe basic evaluation method of true and false LM1875:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThe real LM1875 can be put on AC22VX2, and the counterfeit will fry if it exceeds 18VX2. The real output is protected, and the output short circuit will not burn, and the counterfeit output short circuit will blow up. If it is TDA2030A, it will blow up if it exceeds 16V.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"line-height: 1.5;\"\u003eGG version is the full name.\u003c\/span\u003e\u003cspan style=\"line-height: 14.0px;background-color: #e6f6e6;\"\u003eGaincard is a very sound LM1875 circuit that has been repeatedly compared and optimized abroad. It has frequency bandwidth, fineness, hearing resistance, midpoint and stability. If you have not played LM1875, it is recommended to buy it and try it. If you have bought LM1875, users can buy it as an upgrade.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"line-height: 14.0px;background-color: #e6f6e6;\"\u003eThe principle is that the voltage of the two input terminals of the inverting amplifier circuit is always 0, which does not change with the input signal. The input voltage of the transistor (field effect transistor) at the input terminal of the amplifier is constant, and the bias state is always maintained at the appropriate operating point.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eGenerally, the output of a single LM8175 is 4A current, the official indicator, the driving sensitivity is low, and the large amount of speakers is useless with BTL, and the driving force will be overwhelmed. With parallel output, the driving current can be doubled to 8A current., so that the sound field is better, the medium and low frequencies are fuller, and the power is also improved\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003ePCB size: 124X76 mm\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eWeight: about 166g\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe default main capacitor of the kit is the original UK NOVER 10000UF 35V, which is more durable than Nippon Chemical and Nikon. You need to weld the kit yourself, or you can choose the finished plate.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cstrong\u003eProduct Highlights:\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e*\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"color: #0000ff;\"\u003eAdopting a good-sounding CG circuit architecture, the sound is very delicate and durable, and the midpoint is stable\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e*\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"color: #0000ff;\"\u003eDouble-sided gold-plated military PCB is used, with good electrical conductivity and not easy to oxidize\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe output adds red copper pentoxide inductance to eliminate interference and clutter, and the sound quality is purer and more natural\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eJapanese Omron protection circuit, more secure to use\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eFull advanced component configuration (because there are many non-standard DALE resistors, the default is changed to the famous Beijing Military 718 copper pin resistor).\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003ePCB size \"123MMX75MM board is a double-layer immersion gold PCB.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eAfter decades of classics, why are we still playing with the LM1875 power amplifier circuit?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003ePower range: AC12-AC22X2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eOutput power: 35W-8 ohms 65W 4 ohms\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eImpedance range: 2-8 ohms\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eFrequency response: 10HZ-40KHZ\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eBecause the price is low, the circuit is classic, and the sound is durable. Although the price is not high, the sound has courage and endless aftertaste!\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003eRecommended transformer\u003cbr\u003e\n\u003ca href=\"http:\/\/item.taobao.com\/item.htm?spm=a1z10.3-c.w4002-1582430503.15.UmBemY\u0026amp;id=7314354497\" target=\"_self\"\u003ehttps:\/\/item.taobao.com\/item.htm?spm=a1z10.3-c.w4002-1582430503.15.UmBemY\u0026amp;id=7314354497\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/TB2uvYwlFXXXXaLXXXXXXXXXXXX_!!88221699.jpg\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cstrong\u003eRecommended radiator\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"color: #222222;font-size: 14.0px;line-height: 1.5;\"\u003ehttps:\/\/item.taobao.com\/item.htm?spm=a1z10.3-c.w4002-1582430503.23.nGEIH2\u0026amp;id=524757565205\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01TYJAuC1OQBb4yiIW9_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN011OQBN36C2mHocRQ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN011OQBN37nbQHpscG_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN011OQBN2u3b0EK9ee_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN011OQBN2CZF9F4fzc_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN011OQBN0sZcVzS6Pe_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN011OQBN21VMMNAbcv_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN011OQBN38eyd4KW5C_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 14.4444px;\"\u003eRefer to the wiring diagram, it is the same as the wiring of a single GC1875.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/TB2VhHnlFXXXXchXXXXXXXXXXXX_!!88221699.jpg\"\u003e\u003c\/div\u003e \u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/TB2N96LnFXXXXXRXpXXXXXXXXXX_!!88221699.png\"\u003e\u003c\/div\u003e \u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"A set of spare parts","offer_id":66601497493808,"sku":"4480774064456","price":35.42,"currency_code":"USD","in_stock":true},{"title":"A finished board","offer_id":66601497526576,"sku":"4480774064457","price":38.94,"currency_code":"USD","in_stock":true},{"title":"Finished plate with heat dissipation","offer_id":66601497559344,"sku":"4482549128713","price":41.29,"currency_code":"USD","in_stock":true},{"title":"1 double-sided gold-plated PCB (excluding components)","offer_id":66601497592112,"sku":"4648778357977","price":19.67,"currency_code":"USD","in_stock":true},{"title":"1 piece of matching radiator","offer_id":66601497624880,"sku":"4648778357978","price":22.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01gENi411OQBd2ANbvF__0-item_pic.webp?v=1777040451"},{"product_id":"no-debugging-2-1-5-1-high-power-fever-power-amplifier-board-stk-thick-film-diy-multi-channel-finished-product-heavy-bass","title":"No-tuning 2.1\/5.1 high-power STK thick-film audiophile amp board – DIY multi-channel finished, heavy bass ready","description":"\u003cdiv style=\"width: 750.0px;height: auto;overflow: hidden;\"\u003e\n\u003cdiv style=\"width: 750.0px;height: auto;overflow: hidden;\"\u003e\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;font-size: 14.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #800080;\"\u003e\u003cspan\u003eSanyo STK is commonly known as Sanyo Thick Film. Under the control of the tuned sound and high-precision semiconductor process production process, it is not the level that ordinary amateur DIY players can achieve. In addition to better sound field and resolution, the low-frequency intensity is much stronger, which is completely the difference between professional athletes and ordinary players! These thick film circuits have always been customized products for big brand audio manufacturers. In the early days, many famous factories used them to manufacture power amplifiers, such as K + H, Sony Sony, Panasonic PANSONIC, KENWOOD, JEVIS JVC, Shanshui SANSUI, Sharp SHARP, Pioneer PIONEER, Aihua AIWA, etc. Almost all Japanese audio manufacturers use them, and they have been used for more than 20 years, which has influenced a whole generation. It is also a sound with a strong era brand that our entire generation heard when they were young. It always sounds unforgettable. Sanyo, a company specializing in the production of power amplifier modules, was later acquired by ON Semiconductor of the United States. After the acquisition, it integrated Sanyo's traditional craftsmanship, coupled with ON's unique design, and the later products were even more outstanding. They are still used by large companies in the United States, such as BOSE and Genelec in Europe!\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan\u003e \u003c\/span\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe power amplifier module STK433-270 produced by Sanyo SANYO in the later stage is said to be the product of ON Semiconductor's acquisition of Sanyo's production line. It incorporates ON Semiconductor's design and process. The appearance of the products produced at that stage has changed the tradition of the original black ugly shell of Sanyo, becoming exquisite and meticulous, and the internal workmanship has also been greatly improved. Objectively, it far surpasses the old Sanyo in terms of hearing. It is a pity that only a few of the products at that time can still be seen today. At that time, with the vigorous development of the Internet and the large-scale popularization of various portable devices (especially large-screen touch-screen mobile phones), many people gradually forgot about these high-performance desktop devices. Those former well-known audio manufacturers had to change their product direction, making these customized products dusty in the original SANYO packaging factory warehouse in the Philippines for more than ten years.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eAfter getting the test found that this module still has a relatively large potential, the actual power 60WX3@6 Ω, the recommended working voltage plus or minus 46V, the maximum working voltage should not exceed plus or minus 50V.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e\u003cspan style=\"outline: none;background-color: #ffff00;\"\u003e\u003cspan\u003e    \u003c\/span\u003eDIY is very simple, the whole board has been tested, no need to debug; DIY, upgrading and modifying speakers are all good choices.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis model module is three-channel 60W, and the default full-frequency output signal. When used as a subwoofer, the bass channel needs to be\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eConnect the low-pass signal input.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003ePower supply voltage: AC dual 28-35V,\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: 3X60W@6 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSize: 137 * 85mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eAccessories: Copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e   \u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"outline: none;background-color: #ff8c00;\"\u003eNote: The filter capacitor defaults to 50V withstand voltage, and the capacitor needs to be replaced if it is higher than 50V power supply.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThe finished board is tested and shipped without heat dissipation, and an additional radiator needs to be added.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThis product is not artificially damaged and is guaranteed for 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01e83uod1OQByQHm3zO_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN018dguYW1OQByOXRz20_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01c94mbt1OQByPDXZju_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01Q537B21OQByNU5jH4_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e---------------------- demarcation line ----------------------\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eSTK443-090 This model module is three-channel 80W, and the default full-frequency output signal. When used as a subwoofer, the bass channel needs to be\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eConnect the low pass signal input.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003ePower supply voltage: AC dual 24-36V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFrequency response: 20Hz-50kHz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: 3X80W@4 Ω 3X66W@8 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSize: 169 * 85mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eWeight: 0.28kg\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eAccessories: Copper column nut * 4, screw * 2\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThe finished board is tested and shipped without heat dissipation. It needs to be used with an additional heat sink, and heat dissipation does not require insulation.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThis product is not artificially damaged and is guaranteed for 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01MkvTeZ1OQByWBZsiZ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01qAP5eJ1OQBydiSBQK_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e---------------------- demarcation line ----------------------\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eSTK4187 This model module is three-channel 100W, and the default full-frequency output signal. When used as a subwoofer, the bass channel needs to be\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eConnect the low pass signal input.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003ePower supply voltage: AC dual 25-35V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFrequency response: 15Hz-18kHz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: 3X100W@4 Ω 3X66W@8 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSize: 175 * 83mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eAccessories: Copper pillar nut * 4, screw * 2, three-core shielded cable * 1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThe finished board is tested and shipped without heat dissipation. It needs to be used with an additional heat sink, and heat dissipation does not require insulation.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThis product is not artificially damaged and is guaranteed for 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01F2K6091OQByFXZnAA_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;text-align: center;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e---------------------- demarcation line ----------------------\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e\u003cspan style=\"outline: none;background-color: #ffff00;\"\u003e\u003cspan\u003e  \u003c\/span\u003eDIY is very simple, the whole board has been tested, no debugging required; DIY, upgrading and modifying 5.1-channel speakers are all good choices.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis model module has 5 channels of 30W.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003ePower supply voltage: AC dual 15-28V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: 36W@4 Ω 28W@8 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eTHD + N (Harmonic Distortion + Noise) 0.05%\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eSize: 175 * 103mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eAccessories: Copper column nut * 4, screw * 2\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003e   \u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"outline: none;background-color: #ff8c00;\"\u003eNote: The filter capacitor defaults to 40V withstand voltage, and the AC power supply is higher than 23V power supply, and the capacitor needs to be replaced.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThe finished board is tested and shipped without heat dissipation. It needs to be used with an additional heat sink. The module design is placed at the bottom of the circuit board, and the installation method is horizontal installation.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;outline: none;word-break: break-all;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;outline: none;font-size: 20.0px;\"\u003e\u003cspan style=\"outline: none;color: #0000ff;\"\u003eThis product is not artificially damaged and is guaranteed for 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01JMGchD1OQByOXTnGz_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01mkot7y1OQByP6Xwj6_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01rnh1YX1OQByPDXmB5_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01Hz9ciz1OQByPJkpaS_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;text-align: center;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e---------------------- demarcation line ----------------------\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis product is installed and tested before delivery. The finished plate with the radiator as shown in the picture should not be enough for high power in actual use. You can install the radiator according to your actual usage.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe main filter capacitor of this product is a second-hand disassembly machine in Japan. There is no kit provided on this board, and it will not be disassembled and sold.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis product is guaranteed to be in good hands, and it is not guaranteed if it is damaged by overpressure.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003ePower supply voltage: AC dual 28-35V,\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eOutput power: 3X60W@6 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eDimensions: Width 120 Height 70 Depth 170mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eWeight: 0.6KG\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;color: #000000;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-weight: bold;font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe finished board is guaranteed for 3 months.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01qmomjB1OQByP6WGjT_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01WDAIix1OQByQaPr2E_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01MB84eW1OQByORDTvc_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01Qiy6J91OQByPq03ra_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01dhuV7M1OQByOkqAFr_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN012j12cu1OQByOkrqDs_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01ZofZkL1OQByORBnwY_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"60W * 3 channel power amplifier board","offer_id":66601499820336,"sku":"5349425615222","price":46.14,"currency_code":"USD","in_stock":true},{"title":"60W * 3 Channel Amplifier Board - New","offer_id":66601499853104,"sku":"5349425615221","price":32.39,"currency_code":"USD","in_stock":true},{"title":"PCB empty board + STK433-270 module","offer_id":66601499885872,"sku":"5349425615220","price":19.52,"currency_code":"USD","in_stock":true},{"title":"36W * 5 channel power amplifier board STK402-950","offer_id":66601499918640,"sku":"5416980856599","price":32.66,"currency_code":"USD","in_stock":true},{"title":"30W * 3 channel power amplifier board STK4137","offer_id":66601499951408,"sku":"5688363560628","price":30.07,"currency_code":"USD","in_stock":true},{"title":"100W * 3 channel power amplifier board STK4187","offer_id":66601499984176,"sku":"5983571890809","price":32.66,"currency_code":"USD","in_stock":true},{"title":"80W * 3 channel power amplifier board","offer_id":66601500016944,"sku":"5821975904390","price":32.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01Llqm4t1OQBoZSzXOY__88221699_038ed43f-f37f-47ee-a945-a7f429ff7227.webp?v=1777040597"},{"product_id":"original-stk404-090-thick-film-50wx2-finished-power-amplifier-board-audiophile-grade-stereo-in-new-stock","title":"Genuine STK404-090 thick-film 50W×2 finished amplifier board – audiophile-grade stereo","description":"\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eSpecial note: This product is a finished board of stereo power amplifier, and no kit is provided for the time being.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThe current shipment is green PCB board.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eNote: Product pictures, videos, text and other related descriptions are all made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #008080;\"\u003eAbout Sanyo Semiconductor (ON Semiconductor member company)\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;color: #333333;text-indent: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #008080;\"\u003eSanyo Semiconductor Co., Ltd. (a member company of ON Semiconductor) is a semiconductor manufacturing company with outstanding power supply device technologies, such as small package technology, energy-efficient switching technology, high-density packaging technology, etc., as well as world-class YI analog technology. Several analog-related assets include a wide range of process technology, analog design technology, skilled analog engineers, and specially designed and manufactured energy-saving and environmentally friendly devices, such as hybrid integrated circuits for inverters. Sanyo's core components include discrete circuits, general-purpose analog large-scale integrated circuits, ASSPs, and hybrid integrated circuits, which are widely used in a variety of products, such as personal computers, printers, cable TVs, mobile phones, audio-visual equipment, gaming equipment, car audio systems, and air conditioners.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #800080;\"\u003eSanyo STK is commonly known as Sanyo Thick Film. Under the control of the tuned sound and high-precision semiconductor process production process, it is not the level that ordinary amateur DIY players can achieve. In addition to better sound field and resolution, the low-frequency strength is much stronger, which is completely the difference between professional athletes and ordinary players! These thick film circuits have always been customized products for big brand audio manufacturers. In the early days, many famous factories used them to manufacture power amplifiers, such as K + H, Sony Sony, Panasonic PANSONIC, KENWOOD, JEVIS JVC, Shanshui SANSUI, Sharp SHARP, Pioneer PIONEER, Aihua AIWA, etc. Almost all Japanese audio manufacturers use them, and they have been used for more than 20 years, which has influenced a whole generation. It is also a sound with a strong era brand that our entire generation heard when they were young. It always sounds unforgettable. Sanyo, a company specializing in the production of power amplifier modules, was later acquired by ON Semiconductor of the United States. After the acquisition, it integrated Sanyo's traditional craftsmanship, coupled with ON's unique design, and the later products were even more outstanding. They are still used by large companies in the United States, such as BOSE and Genelec in Europe!\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFortunately, I came across the power amplifier module STK404-090 produced by Sanyo SANYO in the later stage of the batch of new inventory. There are many models of this series, from STK404-050-140. This series of products is relatively late-stage production, using typical classic circuits, the circuit is relatively simple, the package is small, and the sound performance is good. The design output power is 50W @6 ohms, and the distortion is THD0.4%. Push the general bookshelf or floor-to-ceiling speakers to achieve satisfactory results. This thick film chip was only supplied to manufacturers that made the whole machine at that time, so it was difficult to see on the market.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThis board is designed according to the concept of relatively fever, and all interfaces are solder-free and non-destructive to install. The materials used are carefully selected, and the power amplifier module can be installed horizontally or vertically. It is easier to use with a suitable radiator.\u003c\/span\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan\u003e(The filter capacitor of this board is a second-hand disassembly product, with a specification of 35V8100UF.)\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e   \u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eSound performance: The overall tone is warm, the sound is relatively soft, the treble extension is high but not harsh, the bass is deep enough and elastic, and it will not be muddy without mixing. Sanyo thick film is a circuit between integrated and discrete power amplifiers. The fine workmanship and excellent craftsmanship are stronger than 3886 and 7294. Old players who have heard Aihua, SONY and other combined machines know that the sound is excellent, and it is difficult for general DIY players to achieve this level.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003ePower supply voltage: AC dual 22-35V (\u003cspan style=\"color: #ff0000;\"\u003eGreater than or less than this voltage cannot be used normally. When using AC greater than 24V, the filter capacitor needs to be replaced\u003c\/span\u003e)\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eOutput power: 50W@6 Ω\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eAccessories: three-core shielded input cable * 1,4P output cable * 1,15mm screw * 4\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eCircuit board size: 75 wide X142 long X43 high (excluding thick film chips)\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003e   \u003c\/strong\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eWeight: about 176g\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eThe finished board is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01tM5w3v1OQC1V9NVWo_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01IGqNNx1OQC1VVFVUA_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN011ljc801OQC1UskuDA_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01zJ1sq91OQC1V9aOmc_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003ePower supply voltage: AC dual 22-35V (\u003cspan style=\"color: #ff0000;\"\u003eGreater than or less than this voltage cannot be used normally. When using AC greater than 24V, the filter capacitor needs to be replaced\u003c\/span\u003e)\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eOutput power: 100W 8Ω 150W 4Ω measured power\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eAccessories: three-core shielded input cable * 1,4P output cable * 1,15mm screw * 4\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eCircuit board size: 75 wide X142 long X43 high (excluding thick film chips)\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 14.0px;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eThe finished board is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cfont color=\"#0000ff\" face=\"kaiti_gb2312\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cb\u003eThis finished board has a mono output, and two pieces are required for stereo use.\u003c\/b\u003e\u003c\/span\u003e\u003c\/font\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #000000;font-size: 12.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 18.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffff00;\"\u003eThis product is very simple to use, the whole board has been tested, no need to debug, just add a transformer and radiator to make a sound, old power amplifier, speaker modification, measured power 150W4 ohm, easy to push large speakers, large speakers, the effect is much better than the general thousand yuan power amplifier, the real cost of small money to do big things.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01H8bN0E1OQBqbxIF5M_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;word-break: break-all;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01KF8FJG1OQBrpDSX5N_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"STK404-090 power amplifier board + radiator","offer_id":66601512730928,"sku":"5001389374752","price":30.07,"currency_code":"USD","in_stock":true},{"title":"STK404-090 power amplifier board","offer_id":66601512763696,"sku":"5003134518203","price":28.78,"currency_code":"USD","in_stock":true},{"title":"STK404-090 Shunt Amplifier Board - Mono","offer_id":66601512796464,"sku":"5382726853091","price":28.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01tM5w3v1OQC1V9NVWo__88221699.webp?v=1777040717"},{"product_id":"thick-film-rsn311w64-h-class-hifi-audiophile-power-amplifier-board-finished-300w-six-channel-can-be-grouped-into-5-1-channels","title":"Thick-film RSN311W64 Class H Hi-Fi audiophile-grade finished amplifier board – 300W, six channels, configurable for 5.1-channel surround sound","description":"\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eAdopt genuine new original RSN311W64D chip, original box packaging. Module power 25WX6@6 Europe, distortion THD0.15%. Panasonic's most classic power amplifier thick film chip, this is a relatively unique circuit, high parameter indicators, rich sound details and good strength.\u003c\/span\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThis model module is commonly used in Panasonic active subwoofer, with a bass of 6.5 inches and a total measured power of 300\u003c\/span\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e. Guaranteed not to be a polished product, and guaranteed not to be a domestic imitation in the later stage. There are no counterfeits in China for this model. We guarantee the original to be old and fidelity, and you will be fined ten for one fake. Do what you say\u003cbr\u003e\n\u003cbr\u003e\nThese Sanyo thick films are the only remaining Sanyo\/Sanyo STK stock in the world. New power amplifier thick film blocks\u003cbr\u003e\nThere are more than 100 models of thick film blocks in this batch of inventory, with a total quantity of more than 1.3 million pieces. All of them come from Sanyo Sanyo's Philippine packaging and testing factory, which is the only largest spot inventory in the world. It is definitely not a disassembly, not a refurbishment, not a domestic imitation. This is nearly 30 years of tail inventory from Sanyo's factory, and its production period is from 1982 to 2009. There are two reasons for the formation of this batch of goods. One is the stocking inventory made more for each batch of orders (replacement for customers when there is a quality problem), and the other is the unused and unexecuted contract orders in the later stage. After more than three years of testing, we have not found any model with defective products. These are all qualified parts with original packaging. Purchases from us are guaranteed to be brand new and genuine products from the original factory! There are more than 100 models, and we will upload the characteristic table of all models one after another for you to buy. Batch users provide Sanyo thick film manuals. Fake one penalty ten does what you say. All products support retail, and the price ranges from 8-168 yuan. For details, please contact us.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;margin: 1.12em 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 14.4444px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #000000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-style: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-weight: 400;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;letter-spacing: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;orphans: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;text-transform: none;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;white-space: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;widows: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;word-spacing: 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;line-height: 23.3333px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eBasic parameters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003ePower supply voltage: AC dual 22V-33V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eOutput power:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e45W x6 channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e8Ω 50W x6 channel 4Ω RMS measured continuous maximum output power\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eFrequency, sound: 15Hz-65kHz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eLost, True: 0.15%\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eRuler, inch: 133X125MM length X width\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eAccessories: Copper column nut * 4, long screw * 2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eThe default is the finished board, which has been tested before shipment, and the non-human damage is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #000000;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;font-size: 14.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN019u0iFc1OQBtO4kMVr_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01rEGmo41OQBtOaXVHo_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01EdAJS51OQBtMhejF1_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN013d8x1K1OQBtkO6Mij_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01xd3tF81OQBtjJ9Qyu_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01oeN0O81OQBwAdbGbp_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eAdopt genuine new original RSN315H41 chip, original box packaging. Module power 40WX6@6 Europe, distortion THD 0.05%. Panasonic's most classic power amplifier thick film chip, this is a relatively unique circuit, high parameter indicators, rich sound details and good strength.\u003c\/span\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThis model module is commonly used in Panasonic active subwoofer, with a bass of 6.5 inches and a total measured power of 300 watts\u003c\/span\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e. Guaranteed not to be a polished product, and guaranteed not to be a domestic imitation in the later stage. There are no counterfeits in China for this model. We guarantee the original to be old and fidelity, and you will be fined ten for one fake. Do what you say\u003cbr\u003e\n\u003cbr\u003e\nThese Sanyo thick films are the only remaining Sanyo\/Sanyo STK stock in the world. New power amplifier thick film blocks\u003cbr\u003e\nThere are more than 100 models of thick film blocks in this batch of inventory, with a total quantity of more than 1.3 million pieces. All of them come from Sanyo Sanyo's Philippine packaging and testing factory, which is the only largest spot inventory in the world. It is definitely not a disassembly, not a refurbishment, not a domestic imitation. This is nearly 30 years of tail inventory from Sanyo's factory, and its production period is from 1982 to 2009. There are two reasons for the formation of this batch of goods. One is the stocking inventory made more for each batch of orders (replacement for customers when there is a quality problem), and the other is the unused and unexecuted contract orders in the later stage. After more than three years of testing, we have not found any model with defective products. These are all qualified parts with original packaging. Purchases from us are guaranteed to be brand new and genuine products from the original factory! There are more than 100 models, and we will upload the characteristic table of all models one after another for you to buy. Batch users provide Sanyo thick film manuals. Fake one penalty ten does what you say. All products support retail, and the price ranges from 8-168 yuan. For details, please contact us.\u003c\/span\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;margin: 1.12em 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 14.4444px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #000000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-style: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-weight: 400;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;letter-spacing: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;orphans: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;text-transform: none;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;white-space: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;widows: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;word-spacing: 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;line-height: 23.3333px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eBasic parameters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003ePower supply voltage: AC dual 22V-35V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eOutput power:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e70W x 4 channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e8Ω 70W x 4-channel 4Ω RMS measured continuous maximum output power\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eInput sensitivity: 0.5V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eMagnification: 47 times\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eFrequency, sound: 25Hz-45kHz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eLost, True: 0.05%\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eRuler, inch: 163X77MM length X width\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eAccessories: Copper column nut * 4, long screw * 2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eThe default is the finished board, which has been tested before shipment, and the non-human damage is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #000000;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;font-size: 14.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 20.0px;\"\u003eNote: All product pictures, videos, text and other related descriptions are made by a certain period and are for reference only. If there is any change without notice, the specifics are mainly based on the receipt of the actual product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01dojz8A1OQBw7uL92v_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01EyTHrr1OQBwA5bWHx_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01CVlxSq1OQBwCU38yi_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;margin: 0.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN012zbbev1OQBwB1ycP1_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"6-Channel RSN311H64 power amplifier board","offer_id":66601515450672,"sku":"5688274288584","price":39.23,"currency_code":"USD","in_stock":true},{"title":"4-Channel RSN315H41 power amplifier board","offer_id":66601515483440,"sku":"5688274288585","price":33.95,"currency_code":"USD","in_stock":true},{"title":"6 channel RSN311H64 PCB","offer_id":66601515516208,"sku":"5688274288586","price":22.23,"currency_code":"USD","in_stock":true},{"title":"4 channel RSN315H41 PCB","offer_id":66601515548976,"sku":"5688274288587","price":22.23,"currency_code":"USD","in_stock":true},{"title":"300W matching transformer","offer_id":66601515581744,"sku":"5690409145248","price":41.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01uoylz21OQBw7uw8Y4__88221699.webp?v=1777040783"},{"product_id":"gc-version-lm1875-4-core-parallel-amplifier-board-kit-class-a-small-a","title":"GC version LM1875 quad-core parallel amplifier board kit – Class A, mini Class A","description":"\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThe basic evaluation method of true and false LM1875:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThe real LM1875 can be put on AC22VX2, and the counterfeit will fry if it exceeds 18VX2. The real output is protected, and the output short circuit will not burn, and the counterfeit output short circuit will blow up. If it is TDA2030A, it will blow up if it exceeds 16V.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe kit needs to be welded by yourself, please choose the spare parts or finished board according to your own DIY ability. The default main capacitor of the kit is the original UK NOVER 10000UF 35V, which is more durable than Nippon Chemical and Nikon.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cfont color=\"#ff0000\"\u003e\u003cb\u003eThe kit does not contain the main heat dissipation, so it needs to be purchased separately. Because the output of 8 pieces of LM1875 small armor is higher than that of a single piece, this is normal. If you require no temperature, you can buy a digital power amplifier.\u003c\/b\u003e\u003c\/font\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"line-height: 1.5;\"\u003eGG version is the full name.\u003c\/span\u003e\u003cspan style=\"line-height: 14.0px;background-color: #e6f6e6;\"\u003eGaincard is a very sound LM1875 circuit that has been repeatedly compared and optimized abroad. It has frequency bandwidth, fineness, hearing resistance, midpoint and stability. If you have not played LM1875, it is recommended to buy it and try it. If you have bought LM1875, users can buy it as an upgrade.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"line-height: 14.0px;background-color: #e6f6e6;\"\u003eThe principle is that the voltage of the two input terminals of the inverting amplifier circuit is always 0, which does not change with the input signal. The input voltage of the transistor (field effect transistor) at the input terminal of the amplifier is constant, and the bias state is always maintained at the appropriate operating point.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eGenerally, the output of a single LM8175 is 4A current, the official indicator, the driving sensitivity is low, and the large amount of speakers is useless with BTL, and the driving force will be overwhelmed. With 4 output, the driving current can be doubled to 16A current. This way, the sound field is better, the medium and low frequencies are fuller, and the power is also improved.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cfont color=\"#ff0000\"\u003e\u003cb\u003eOne channel is output by 4 pieces of LM1875, the quiescent current is 4 times higher than that of a single piece, the whole board current is about 0.5A, and the medium and small volume is pure Class A state. The human voice is very delicate and natural, full, and more comfortable than 1969 Class A. At the same time, it can be successful without cumbersome debugging\u003c\/b\u003e\u003c\/font\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong\u003eProduct Highlights:\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e*\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"color: #0000ff;\"\u003eAdopting a good-sounding CG circuit architecture, the sound is very delicate and durable, with a stable midpoint of 4 and X2 small Class A output\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e*\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"color: #0000ff;\"\u003e40000UF large-capacity filtering, excellent for low-frequency diving\u003c\/span\u003e\u003cbr\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e*\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"color: #0000ff;\"\u003eDouble-sided gold-plated military PCB is used, with good electrical conductivity and not easy to oxidize\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe output adds red copper pentoxide inductance to eliminate interference and clutter, and the sound quality is purer and more natural\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eJapanese Omron protection circuit, more secure to use\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003eFull Advanced Component Configuration\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-size: 14.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003ePCB size \"185MMX98MM The board is a double-layer immersion gold PCB.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eAfter decades of classics, why are we still playing with the LM1875 power amplifier circuit?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003ePower range: AC12-AC22X2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eOutput power: 45W-8 ohms 60W 4 ohms (5W under pure A)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eImpedance range: 1-8 ohms\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eFrequency response: 10HZ-40KHZ\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eRadiator size 200 * 40 * 62\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eWhole machine display:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01qljQji1OQBXtDII5K_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003eRecommended transformer (18V is recommended)\u003cbr\u003e\n\u003ca href=\"http:\/\/item.taobao.com\/item.htm?spm=a1z10.3-c.w4002-1582430503.15.UmBemY\u0026amp;id=7314354497\" style=\"text-decoration: underline;color: #3366cc;outline: 0.0px;\" target=\"_self\"\u003ehttps:\/\/item.taobao.com\/item.htm?spm=a1z10.3-c.w4002-1582430503.15.UmBemY\u0026amp;id=7314354497\u003c\/a\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01bQ1SC11OQBVTuUAc6_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 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400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01yHchfi1OQBVSa9zSu_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01S0jAsm1OQBVPLS9S2_!!88221699.jpg\" style=\"max-width: 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src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01nqmMhe1OQBoWTNwmA_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01MsW7bV1OQBoZmwUV2_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01tWPzcW1OQBoVTdntb_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01mOlI9C1OQBoWTLX8V_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01Fh9dpM1OQBoWTG9rs_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01f2s3Si1OQBoacd16p_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01zPdbyL1OQBoWTL40r_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN018Foymb1OQBoWTIuLD_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01qNkGK41OQBoYS5QTP_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Kit spare parts 1 set","offer_id":66601526165808,"sku":"4650990934140","price":29.69,"currency_code":"USD","in_stock":true},{"title":"1 finished 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120W","offer_id":66601526329648,"sku":"4821717463941","price":25.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01FKke4x1OQBcx0mXaj__0-item_pic.webp?v=1777040954"},{"product_id":"new-stock-original-rsn3502-thick-film-hifi-audiophile-power-amplifier-board-finished-diy-binaural-audio","title":"Brand new old stock original RSN3502 thick-film hi-fi audiophile-grade amplifier board – finished DIY stereo sound system.","description":"\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThe only new stock on the whole network Panasonic original RSN3502 power amplifier thick film power amplifier board\u003cbr\u003e\nAdopt genuine brand new original RSN3502 chip, original box packaging. The power of the power amplifier board is 50WX2@4 euros, and the distortion is THD0.1%. Panasonic's most classic power amplifier thick film chip, this is a relatively unique circuit, with high parameter indicators and rich sound details. The output power tube is a field effect tube. It is guaranteed that it is not a polished product, and it is guaranteed that it is not a later domestic imitation. There are no counterfeits in this model in China. We guarantee the original old-fashioned fidelity, and a penalty of ten for false ones. Do what you say\u003cbr\u003e\n\u003cbr\u003e\nThese Sanyo thick films are the only remaining Sanyo\/Sanyo STK stock in the world. New power amplifier thick film blocks\u003cbr\u003e\nThere are more than 100 models of thick film blocks in this batch of inventory, with a total quantity of more than 1.3 million pieces. All of them come from Sanyo Sanyo's Philippine packaging and testing factory, which is the only largest spot inventory in the world. It is definitely not a disassembly, not a refurbishment, not a domestic imitation. This is nearly 30 years of tail inventory from Sanyo's factory, and its production period is from 1982 to 2009. There are two reasons for the formation of this batch of goods. One is the stocking inventory made more for each batch of orders (replacement for customers when there is a quality problem), and the other is the unused and unexecuted contract orders in the later stage. After more than three years of testing, we have not found any model with defective products. These are all qualified parts with original packaging. Purchases from us are guaranteed to be brand new and genuine products from the original factory! There are more than 100 models, we will upload the characteristics table of all models one after another for you to buy. Batch users provide Sanyo thick film manuals. All products support retail sales, and the price ranges from 8-168 yuan. For details, please contact us.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #000000;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #e6f6e6;float: none;display: inline;\"\u003ePanasonic thick film RSN3502 actual listening very durable, intermediate frequency unexpected.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;margin: 1.12em 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 14.4444px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #000000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-style: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-weight: 400;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;letter-spacing: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;orphans: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;text-transform: none;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;white-space: normal;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;widows: 2;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;word-spacing: 0.0px;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;line-height: 23.3333px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-family: kaiti_gb2312;font-size: 24.0px;line-height: 36.0px;\"\u003eBasic parameters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003ePower supply voltage: AC dual 18V-33V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eOutput power:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e60W+60W  \u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e8Ω 80W + 80W 4Ω measured continuous maximum output power\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eFrequency, sound: 40Hz-45kHz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eLost, True: 0.1%\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003eRuler, inch: 136X56MM length X width\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;color: #ff0000;\"\u003e\u003cspan style=\"box-sizing: inherit;word-break: break-all;font-size: 22.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eAccessories: copper pillar nut * 4, input shielded wire * 1, long screw * 2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: inherit;padding: 0.0px;word-break: break-all;margin: 0.0px;color: #000000;font-size: 12.0px;font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;widows: 2;word-spacing: 0.0px;white-space: normal;background-color: #ffffff;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-size: 24.0px;line-height: 36.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;font-family: kaiti_gb2312;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;\"\u003eThe default is the finished board, which has been tested before shipment, and the non-human damage is guaranteed for 3 months.\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01KkRgWU1OQBycCpvav_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01j55IEG1OQBybzvDjn_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01IWS0Uq1OQBycXcytj_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN0159XwaW1OQBycoxiVC_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01HDvcFv1OQBtehZ6gX_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN015SYjbr1OQBtl83xSj_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN016JYXZ61OQBthqobH1_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01fnxuM41OQBtfotWqR_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"power amplifier board","offer_id":66601541271856,"sku":"5545043124379","price":40.56,"currency_code":"USD","in_stock":true},{"title":"PCB","offer_id":66601541304624,"sku":"5545043124378","price":16.84,"currency_code":"USD","in_stock":true},{"title":"120W toroidal transformer double 25V","offer_id":66601541337392,"sku":"5688283212379","price":33.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01KkRgWU1OQBycCpvav__88221699.webp?v=1777041005"},{"product_id":"伟良stk428-640厚膜发烧级hifi功放板成品200wx2-d类大功率放大器","title":"STK428-640 thick-film audiophile hi-fi finished amplifier board – 200W×2 Class D high-power amplifier","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01gP9Img1OQC0tzT5jt_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01uqxX5N1OQC0uWwy0u_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01046Mg81OQC0u7v06W_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01iklUkY1OQBu6xilj1_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01J0wlPg1OQC0thEUP8_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01CxHBGB1OQC0tHBY0Y_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01VZvoKz1OQC0u9joSu_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01te7Kuu1OQC0v0glew_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01A1qkIF1OQC0v0iysq_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01MisfGo1OQC0u7vKtz_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01pXG9v21OQC0u9iXTc_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01AScWVu1OQC0uY8l27_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01rXyhO71OQC0sqXQtb_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01u6x3Fa1OQC0uY8HvQ_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01hljLAY1OQBv7cH9M1_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01s9s4cR1OQC0tEfewI_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01unjzrb1OQC0u5nIaw_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"功放板","offer_id":66601543794992,"sku":"5804726807342","price":38.79,"currency_code":"USD","in_stock":true},{"title":"配套变压器","offer_id":66601543827760,"sku":"5804726807341","price":41.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01lVNRzK1OQBv72KLy0__88221699_d2c92fc5-59a8-4a4b-9179-33f25daa3bd4.webp?v=1777041059"},{"product_id":"300b-single-ended-class-a-power-amplifier-tube-bile-machine-power-amplifier-board-sunken-gold-pcb-kit","title":"300B single-ended Class A tube amplifier – amplifier board, immersion gold PCB, kit","description":"\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cstrong style=\"color: #ff0000;font-size: 24.0px;line-height: 1.5;\"\u003eIf you choose 225 yuan, the board kit is only the components on the board and does not contain tubes. The boards with both price options need to be welded by yourself. If you weld the finished board on behalf of you, add 55 yuan.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #006400;\"\u003eFrom the 6SN7 power supply here AC line, one of the leads to the chassis grounding, can be very good board to improve the signal to noise ratio, power amplifier is very quiet! Do not make a mistake, PCB VCC printing and output transformer B pin corresponding connection.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eChoose 2568 yuan, which is a complete set of kits, including 2 Noble 300B, 2 Dawning 6N8P, a 5Z4P Dawning tube, 1 chassis (open the transformer installation hole by yourself), 2 output transformers, 1 choke, 1 power transformer, 1 type 27 potentiometer, 2 CMC816, 6 crystal horn pillars, related screw connectors, excluding cattle cover\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eThe weight of the full set is about 18-20KG. Contact customer service to change the price when you place an order. It is recommended that Debon Logistics freight yard pick it up by itself.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe resistance and capacitance parts used in the 300B machine of 2000 yuan on the market are very general, and the output cattle do not use high-end films like Z11, and they are also very small with imported tubes, which is difficult to play the advantage of 300B\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #9900ff;\"\u003eThe matching chassis is shot here, and the tube outlet hole has been opened. The transformer hole needs to be opened by yourself, and the opening of the transformer provided by individual customers is different.\u003ca href=\"http:\/\/item.taobao.com\/item.htm?spm=a1z10.3.w4002-1582430503.19.CgU1V2\u0026amp;id=40317587420\"\u003ehttp:\/\/item.taobao.com\/item.htm?spm=a1z10.3.w4002-1582430503.19.CgU1V2\u0026amp;id=40317587420\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #9900ff;\"\u003erenderings\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN011OQBN1QuoxXZH3P_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003eThis is the renderings (made by netizens Ye Sheng)\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/TB2AFYMXVXXXXa_XXXXXXXXXXXX_!!88221699.jpg\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe architecture of the kit is 6SN7 + 300B single-ended output form, and the adjectives of bragging do not need to be expressed more, which will not disappoint.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e300B has always been used by many people to build a shed, the project is large, the wiring is too much, the reliability and performance are affected, and the appearance is not good-looking. With well-made PCB production, these difficulties can be completely solved. Because there are not many components that are free of debugging, it is almost the same as the difficulty of manufacturing an LM1875\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/T2S6JuXMRXXXXXXXXX_!!88221699.jpg\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cstrong style=\"font-size: 14.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e1.6SN7 + 300B single-ended output form design, the most original classic 300B solution.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e2.2.0 mm high quality gold\/lead-tin black printed circuit board (203 * 134mm), copper thickness is double copper, weight: 456g\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e3. Extremely high signal to noise ratio, quiet background\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e4. The circuit is free of debugging and easy to make.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe coupling capacitor is made of the best French SCR Surun capacitor with the best human voice, and the 300B tube seat is also the best 95 fine ceramic special 24K gold to ensure the perfect performance of the circuit. See the bottom of the page for detailed materials. This configuration is better than many expensive finished machines.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cstrong\u003eThe voltage parameters of each terminal have been marked on the board, and the transformer can be seated correctly (the filament power supply of 5U4 is changed to 5V). The 2 points marked with L are connected to the choke\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eCommon sense note:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003cspan style=\"color: #0c343d;\"\u003e\u003cspan style=\"font-family: simhei;\"\u003e\u003cspan style=\"background-color: #f4cccc;\"\u003e1. The output transformer cannot be turned on without connecting the speaker, and it will burn out at no load.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003cspan style=\"color: #0c343d;\"\u003e\u003cspan style=\"font-family: simhei;\"\u003e\u003cspan style=\"background-color: #f4cccc;\"\u003e2. The input voltage to the terminal should be connected strictly according to the instructions, and it cannot be connected incorrectly.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003cspan style=\"color: #0c343d;\"\u003e\u003cspan style=\"font-family: simhei;\"\u003e\u003cspan style=\"background-color: #f4cccc;\"\u003e3. Do not be scalded on the hot topic of the tube. Install the tube after normal power-on and no abnormality\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #cc0000;\"\u003e\u003cspan style=\"background-color: #ffd966;\"\u003eThe latest version has been launched, which has increased the pre-stage gain and better sound field positioning\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01HYqeD61OQC2JLEcuo_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01f2cZZO1OQC2JuiddL_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01KKr8Ak1OQC2JeGaIi_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01WadhTC1OQC2JG2UqP_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cspan style=\"color: #cc0000;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"background-color: #ffd966;\"\u003eThe resistance and capacitance values of the PCB parameters and the schematic diagram are slightly different, and the parameters marked on the PCB shall prevail\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/TB2Pj29aX6.F1JjSZFPXXc0aFXa_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01CilX0X1OQC2JvqrMW_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01Hm6vAC1OQC2IxejvU_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/T2QdRuXR0XXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cstrong\u003eOptional tubes available\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003ePSVANE Noble Voice Hi-Fi Edition 300B Tube +\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e5Z4P\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003eRectifier tube + 6SN7 tube\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003ehttps:\/\/item.taobao.com\/item.htm?spm=a1z10.5-c.w4002-1582420965.36.FeRcIh\u0026amp;id=37846736175\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/TB2R8UahXXXXXbLXpXXXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003ehttps:\/\/item.taobao.com\/item.htm?spm=686.1000925.0.0.gdFHQC\u0026amp;id=524244851334\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/TB2ZUMuhXXXXXbTXXXXXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e https:\/\/item.taobao.com\/item.htm?spm=686.1000925.0.0.gdFHQC\u0026amp;id=524272330088\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/TB2ncIHhXXXXXXjXXXXXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003eProvide optional power transformer address: http:\/\/item.taobao.com\/item.htm?spm=a1z10.3.w4002-1582430503.21.Nt8J7V\u0026amp; id = 38261870346\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/T22gNrXL0aXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003eChoke purchase address http:\/\/item.taobao.com\/item.htm?id=38262054156\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/T2UGRxXIVXXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eJapan Z11 chip output transformer\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nhttp:\/\/item.taobao.com\/item.htm?spm=a1z10.5.w4002-1582420965.39.3bzr2h\u0026amp;id=37513251244\u003c\/p\u003e\n\n\u003cp style=\"color: #404040;line-height: 21.0px;font-size: 14.0px;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/T2dXpsXKdaXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"PCB spare parts (excluding pipes)","offer_id":66601565126960,"sku":"3462955149326","price":49.49,"currency_code":"USD","in_stock":true},{"title":"Full set of electronic parts, transformers, chassis, pipes","offer_id":66601565159728,"sku":"3609866406962","price":557.06,"currency_code":"USD","in_stock":true},{"title":"Finished board made of PCB parts (excluding tubes)","offer_id":66601565192496,"sku":"4837947222166","price":56.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01Hm6vAC1OQC2IxejvU__88221699.webp?v=1777041295"},{"product_id":"el34-single-ended-class-a-bile-amplifier-board-kit-excluding-tubes","title":"EL34 single-ended Class A tube amplifier board kit (tubes not included)","description":"\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cu\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003e\u003cfont\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eThis kit does not contain tubes and output transformers. You need to contact customer service for the finished board to change the price.\u003c\/span\u003e\u003c\/font\u003e\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01UXgWzC1OQC1HfEEwn_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe production difficulty is simpler than that of ordinary discrete power amplifiers. The reason is very simple. You only need to weld it yourself, without punching heat dissipation holes, free debugging, few components, and no effect. After listening, you will forget the power amplifier you have done before.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eNoble EL34 genuine licensed goods, the details are excellent\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/TB231cQdFXXXXX9XXXXXXXXXXXX_!!88221699.jpg\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cu\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eSome customers have reported that the resistance is not large enough, so there is no need to worry about it at all. It has been precisely calculated. For example, the cathode resistance current of EL34 is 50MA, and the power consumption generated by 330 euros is only 0,85W. We are equipped with 3W imported resistors. The absolute capacitance is abundant.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThere seem to be more than 600 yuan of EL34 on the market, using 30 yuan a cheapest EL34 with a lower-end tube than 12X7 for front-end amplification, the output cow is also made of ordinary materials, the United States DALE resistance, Philips high-voltage capacitors These materials don't need to think about it. The cost is estimated to be around 400 yuan\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe single-ended Class A bile power amplifier is the best bile power amplifier circuit for the human voice. The sound is warm and charming, the overtone is rich, and the human voice is very poisonous. But now in the commercial society\u003cu\u003e\u003cspan style=\"color: #0000ff;\"\u003eMany businesses directly use ordinary resistor capacitors, low-end 6P3p, 6N2 6N3 and the like, coupled with a few cheap huge rectifier tanks and low-quality output transformers\u003c\/span\u003e\u003c\/u\u003eInstall a beautiful shell, you can sell a good price, the actual sound is similar to the power amplifier IC.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eThis circuit uses 12X7 (or higher-end ECC83) as voltage amplifier, and Noble EL34B as voltage amplifier\u003cfont face=\"Aharoni\"\u003eSingle-ended Class A output, the rectification part does not use inefficient bile rectification, bile rectification, a number of rectifier tubes and dozens or even hundreds of\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003erectifier tube\u003c\/font\u003e\u003c\/strong\u003eThe sound color is very different. Philips' rectifier tube and field tube electronic filter are used here, so that the overall background is quiet and the extension is very good. This promotes the Seas gold series used by yourself\u003c\/font\u003e\u003cspan style=\"color: #ff0000;\"\u003eE0049 + E0011 Speaker\u003c\/span\u003e\u003cfont face=\"Aharoni\"\u003eExcellent.\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cu\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003eThis kit does not include tubes and output transformers. The price is 82 yuan, using imported resistors and Nikon high-voltage capacitors. Cathode capacitors use warm-sounding chemicals, and the sound matching is very good. If you want to make the cost lower, EL35 can be used for 6P3P generation, ECC88 for 12X7 generation, but\u003c\/font\u003e6P3P\u003cfont face=\"Aharoni\"\u003eThe power is smaller, actually you want more power, you can use it instead.\u003c\/font\u003eKT88\u003cfont face=\"Aharoni\"\u003eJust adjust the cathode resistance.\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff00ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eMatching all-aluminum chassis (excluding cow cover)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absMiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/1\/1\/88221699\/11699027417253062\/T2yPCTXoRbXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff00ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eNotes:\u003cbr\u003e\nThe tube is a Class A single-ended output, and the tube temperature and cathode resistance temperature are a bit high. This is a normal phenomenon, and there is no cold tube.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003eMany people do the front stage of the bile, but the back stage of the bile is relatively small. The main reason is that the previous kit was too inhumane, troublesome wiring, large size, poor layout, a large number of connections to increase loss and reduce signal-to-noise ratio. The wiring of this kit is very optimized. Under the shielding state of the input terminal, the AC sound is unpleasant to the ear. The whole machine is free of debugging, and the wiring is extremely small. It only needs to lead out the wire of the output transformer. It is actually better than the power amplifier, because the components are small, debugging is free, and the output isolation transformer is 10 times more reliable than the relay protection of the stone machine\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cu\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003ePCB size: 170x99mm\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cu\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003eWeight: about 279\u003cbr\u003e\nTransformer voltage: 230VX1 (\u003c\/font\u003eIt can range from 200V to 250V, greater than or equal to 300MA.\u003cfont face=\"Aharoni\"\u003e) 6.3VX1 (2A current)\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cu\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003eThe output power of this kit is Class A 10Wx2, don't underestimate 10W, generally Class A 5W has excellent hearing and sound pressure in a small room.\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cu\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003eOur store has launched supporting chassis one after another.\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cu\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003eProduction attention:\u003cbr\u003e\n1 The bile is a glass product, be careful to collide, the bile temperature of the bile machine is relatively high, generally do not touch it with your hands at will, the principle of this light bulb is the same\u003c\/font\u003e\u003c\/strong\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cu\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003e2. The power supply is relatively high. Do not directly contact the high voltage with your hands when measuring. Although the current is very small and there is no danger, direct contact is still a little painful.\u003c\/font\u003e\u003c\/strong\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003ePhysical picture of finished board\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01UXgWzC1OQC1HfEEwn_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN019eQn3R1OQC1MoC2DD_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eDIY parts bag pictures\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01PEIaag1OQC1MvrnsV_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cu\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003e\u003cdiv\u003e\u003cimg align=\"absMiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/1\/1\/88221699\/11699037738308342\/T2McIHXmhXXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003e\u003cdiv\u003e\u003cimg align=\"absMiddle\" referrerpolicy=\"no-referrer\" src=\"http:\/\/gtu-c04.m.alicdn.com\/1\/1\/88221699\/11699025783871183\/T2GJsGXgBaXXXXXXXX_!!88221699.jpg\"\u003e\u003c\/div\u003e\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003e\u003cdiv\u003e\u003cimg align=\"absMiddle\" referrerpolicy=\"no-referrer\" src=\"http:\/\/gtu-c04.m.alicdn.com\/1\/1\/88221699\/11699025651200571\/T2AkUHXeXXXXXXXXXX_!!88221699.jpg\"\u003e\u003c\/div\u003e\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003cfont face=\"Aharoni\"\u003e\u003cdiv\u003e\u003cimg align=\"absMiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/1\/1\/88221699\/11699025366105686\/T2ebUHXh0XXXXXXXXX_!!88221699.jpg\" style=\"width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\u003c\/font\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;text-transform: none;text-indent: 0.0px;letter-spacing: normal;word-spacing: 0.0px;white-space: normal;orphans: 2;widows: 2;background-color: #ffffff;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff00ff;\"\u003eGrounding method of front stage and power amplifier DIY\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nA bit of grounding, I think, can be divided into three levels: one is a bit of grounding at this level, the other is a bit of grounding at the PCB level, and the third is a bit of grounding at the system level, that is, the whole machine. Theoretically, a little grounding is good, but in these three levels, the further down, the more practical problems there are (such as too many ground wires, etc.). I have seen a few examples of overseas production that mention grounding arrangements, unless the line is particularly simple, it is mostly series grounding (that is, step-by-step grounding is connected in series according to the schematic diagram), or a little grounding and series grounding (that is, this stage uses a star-shaped one-point grounding, and then series connection step by step).\u003cbr\u003e\nIn addition, as an analog low-frequency amplifier, it is rare to use a large area of ground nearby, so it is generally necessary to avoid the ground wire forming a loop (to avoid causing the current of the later stage to flow through the ground wire of the previous stage). Since the amplifier is mostly two-channel, their two channels have to share a chassis, resulting in a common point. If it is not handled well, it is easy to form a loop current. This requires attention.\u003cbr\u003e\nRegarding the grounding point of the chassis, the RCA connection (mentioned by friends above), the nearest transformer connection, and the nearest power supply connection are all used. What I want to say is that if the grounding point is far away from the RCA input terminal, there may be AC sound - it is said that the induction potential of the RCA and the grounding point is different - which can be solved by connecting a 0.01U capacitor to the chassis at the cold end (ground end) of the RCA socket.\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;text-transform: none;text-indent: 0.0px;letter-spacing: normal;word-spacing: 0.0px;white-space: normal;orphans: 2;widows: 2;background-color: #ffffff;\"\u003e \u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absMiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/T2m1KHXpdaXXXXXXXX_!!88221699.jpg\" style=\"border: 0.0px currentcolor;vertical-align: top;width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;color: #000000;text-transform: none;text-indent: 0.0px;letter-spacing: normal;word-spacing: 0.0px;white-space: normal;orphans: 2;widows: 2;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absMiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/T28Y5zXuxXXXXXXXXX_!!88221699.jpg\" style=\"border: 0.0px currentcolor;vertical-align: top;width: 750.0px;max-width: none;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66601569714480,"sku":null,"price":32.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01O0NcNN1OQC1Nk54eF__88221699.webp?v=1777041413"},{"product_id":"tpa3221-high-power-hifi-sound-quality-all-round-king-power-amplifier-board-bluetooth-5-3-u-disk-player-power-amplifier","title":"TPA3221 high-power Hi-Fi sound quality all-in-one champion amplifier board with Bluetooth 5.3 and USB flash drive player","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN017JbuzE1OQC16ksuc8_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01SBdF0c1OQC2s5vWxl_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN015WCRjh1OQC23y5Wb9_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN015UPKAG1OQC1nBxLhg_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN017JbuzE1OQC16ksuc8_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01dBo8uD1OQC1sS09W4_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN013QD1AW1OQC17xp3Ps_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN010aSGB91OQC235mhmN_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01aPDGxy1OQC17Xy8xv_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01P36YR91OQC17Y0I1Q_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01wtsYyX1OQC1CjR1lo_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01QDIGzY1OQC1EmRZ9b_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01rKvChm1OQC2oRVh6A_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01tdpVKX1OQC2o4X9n4_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN017z76Mk1OQC2nvTLAh_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Default Title","offer_id":66601596649776,"sku":null,"price":32.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN017JbuzE1OQC16ksuc8__88221699.webp?v=1777041834"},{"product_id":"tpa3116d2-100w-mono-subwoofer-power-amplifier-board-fever-finished-board","title":"TPA3116D2 100W mono subwoofer amplifier board – audiophile finished board","description":"\u003cp\u003e\u003cstrong style=\"color: #000000;font-size: 14.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 0.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 28.0px;\"\u003eThe product does not contain a power supply, you need to buy it separately or bring your own power supply.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cu style=\"font-size: 14.4444px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18.0px;\"\u003eThe power supply matched with the board is very critical. The higher the voltage, the greater the current, and the more output power. If you only have 12V 1A, you can bring 3-4 inch speakers. If you are above 19V 5A, it is no problem to bring 8-10 inches. The power supply must be highly valued.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eThe board is welded and tested, and the board channel can be used. The warranty is three months.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cstrong style=\"color: #ff0000;font-size: 17.7778px;line-height: 30.0px;\"\u003eThe digital power amplifier can be used as a standard mono power amplifier board or a heavy subwoofer power amplifier board, with\u003cspan style=\"color: #0000ff;\"\u003eFront stage operational amplifier NE5532\u003c\/span\u003eBuffer matching. Better than the TPA3116 without the front driver on the market.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cstrong style=\"color: #ff0000;font-size: 17.7778px;line-height: 30.0px;\"\u003eThe default delivery is to send a heavy subwoofer power amplifier board. If you want full frequency, you can tell us, and we will send full frequency delivery.\u003c\/strong\u003e\u003cbr\u003e\n\u003cb style=\"color: #ff0000;line-height: 21.0px;font-size: 14.0px;\"\u003eTurn the knob left to the bottom to turn it off.\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cb style=\"font-size: 14.0px;color: #ff0000;line-height: 21.0px;\"\u003e\u003cspan style=\"color: #000000;line-height: 23.3333px;\"\u003ePCB size is 75X60MM.\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;font-size: 14.4444px;line-height: 23.3333px;\"\u003e\u003cb style=\"font-size: 14.0px;color: #ff0000;line-height: 21.0px;\"\u003e\u003cspan style=\"color: #000000;line-height: 23.3333px;\"\u003eWeight: about 62g\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 1.12em;margin-bottom: 1.12em;color: #000000;line-height: 23.3333px;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eUnlike TAOBAO's cheap digital power amplifiers that are sold for sale, the low cost cannot play the performance of TPA3116. Our key components are customized with 2-3 times the materials, regardless of performance or cost.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;color: #000000;line-height: 23.3333px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"background-color: #eeeeee;\"\u003e\u003cspan style=\"background-color: #0000ff;\"\u003e100W  \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;color: #000000;line-height: 23.3333px;\"\u003e\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e\u003cspan style=\"font-size: 18.0px;\"\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"background-color: #8e7cc3;\"\u003e\u003cspan style=\"background-color: #eeeeee;\"\u003eIs to use the new American\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cstrong\u003eTI\u003c\/strong\u003e\u003c\/span\u003eThe company's TPA3116D2 high-performance power amplifier chip is the core\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;font-family: microsoft yahei;line-height: 27.0px;background-color: #eeeeee;\"\u003e,\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"line-height: 18.0px;\"\u003e\u003cspan style=\"background-color: #eeeeee;\"\u003eDC single power supply 8-25V wide working voltage\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-family: microsoft yahei;color: #0000ff;background-color: #eeeeee;\"\u003e, 50W (left channel) + 50W (right channel)\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-family: microsoft yahei;\"\u003e\u003cspan style=\"background-color: #eeeeee;\"\u003edouble\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;font-family: microsoft yahei;background-color: #eeeeee;\"\u003eChannel output, efficiency up to 90%.\u003c\/span\u003e\u003cspan style=\"color: #0000ff;font-family: microsoft yahei;background-color: #eeeeee;\"\u003eCan use switching power supply, notebook computer switching power supply, battery or car power supply, etc...\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eOptional matching power supply:\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe power interface is a standard 5.5\/2 power jack, the same as most notebook power supplies\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003ePower supply range: 12-24V\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e \u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e\u003cspan style=\"line-height: 23.3333px;\"\u003eTip: If the audio input is sufficient and the power supply voltage\/current is sufficient, there will be enough output power. If the power supply voltage is higher, the relative power will be larger, and the speakers with different impedance will have different output power. If the voltage and current are sufficient, the larger the number of Europe horns, the smaller the relative sound power. Please pay attention!\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e\u003cspan style=\"color: #0000ff;font-size: 14.0px;\"\u003ePrecautions for use: The normal operation is to connect the power connection port of the external power supply and the digital power amplifier first, and then connect the 220V power cord of the external power supply into the mains socket. The wrong way is to connect the mains interface of the external power supply first, and then input the output interface of the external power supply to the digital power amplifier, because the digital power amplifier has a filter capacitor, so that the capacitor is charged and discharged, and a low-voltage small spark is generated within 0.1 seconds of contact. Although the low voltage has no effect, it is also a bad habit.\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0.0px;padding: 0.0px;\"\u003e\n\u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01mT2RQ21OQBeVkmymi_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e  \u003cdiv\u003e\u003cimg align=\"absmiddle\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01Ox3MJ51OQBgJjct4R_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Bass version","offer_id":66601604612400,"sku":"4656735507897","price":19.13,"currency_code":"USD","in_stock":true},{"title":"Full range 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src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01du0qoj1OQBsimo8pd_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01TckMng1OQBsy8Xuap_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01PdbMIU1OQC3BouSmq_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01ylsRNQ1OQC3ArIzMX_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"PDV10A finished board","offer_id":66601609855280,"sku":"5697353467895","price":36.0,"currency_code":"USD","in_stock":true},{"title":"PDV10A 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src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN015EoSkS1OQBpDS38bO_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01eTUf9o1OQBpLYXfN4_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01Xavyan1OQBpQRdQFo_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01edw9jv1OQC1eimXZC_!!88221699.jpg\" style=\"display: block;width: 100.0%;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"SAMP-200 power amplifier 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