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src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01YXw7wJ1OQC2yfWhaR_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img94\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01dBkS0L1OQC2w1GnuP_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img95\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01ZlfGn91OQC2wSg3nS_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img96\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01mwcxFN1OQC2w1Ezfd_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img97\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN019Soo2i1OQC2wSezJN_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img98\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01Xbs2P51OQC2w3J7qV_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"H-PAT-88 push-pull amplifier + supporting tube [Tube development]","offer_id":66868439843120,"sku":"6220228839807","price":1425.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01Y9u78d1OQC2wSZgL2__88221699.webp?v=1779760056"},{"product_id":"qingfeng-fu29-fm30-push-pull-tube-power-amplifier-teana-a200-tube-bile-machine-with-bluetooth-5-0-receiver","title":"Qingfeng FU29 FM30 push-pull tube power amplifier, Teana A200, tube bile machine with Bluetooth 5.0 receiver","description":"\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;\"\u003e\u003cfont color=\"#ff0000\"\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"background-color: #00ff00;\"\u003e\u003cb\u003eThe current tube is Beijing FM30, and the effect is the same as FU29\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/font\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 30.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;float: none;display: inline;\"\u003e\u003cstrong style=\"\"\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eThe Russian product name of the FU29 is FY29, and the American product name is 829B. It is a composite tube that encapsulates two emitter quadrupoles in the same glass shell. It is used in a push-pull output power amplifier to reduce the trouble of selecting and pairing. The filament voltage of the FU29 is 6.3V, the current is 2.25A, the screen voltage is 600V, the curtain gate voltage is 200V, the zero signal screen current is 40mA, and the full signal current is 110mA. The gate bias is -18V, and the optimal load impedance from the screen pole to the screen grid is 13750Ω. The output power (effective value) reaches 44W when the signal is full. In order to further simplify the circuit, this machine uses a composite tube 6N2 for pre-amplification and inversion, so that a single channel with a 6N2 and a FU29 can complete the power amplifier task, and has 40W power output. This machine is small in size, unique in shape, but powerful in thrust. Do not use the power of general transistors or digital power amplifiers to compare the actual thrust of this tube power amplifier, because of the high power supply voltage and unique output structure, its output internal resistance changes relatively little for high and low frequency signals, has good low-frequency driving ability, and the sound is soft, smooth, warm and delicate. This is also the reason why tube power amplifiers have not been completely replaced after the emergence of many new technologies.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 30.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;float: none;display: inline;\"\u003e\u003cstrong style=\"\"\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eThis machine is suitable for pushing general bookshelves and most floor-to-ceiling speakers. We have tested that the Danaer\/Dynaudio contour 1.8 floor-to-ceiling speakers that are more difficult to push here are also pushed powerfully. We have added a new Bluetooth 5.0 receiver module to facilitate wireless connection of portable devices such as mobile phones.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong style=\"color: #000000;font-size: 14.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 30.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eAt present, the production date of this batch of domestic tubes we have received ranges from six years to eight years, and the meticulous workmanship is amazing. It is hard to imagine that we could have completed such fine and complex products ourselves in that era, and the consistency is very good.\u003c\/span\u003e\u003c\/strong\u003e \u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eIn the specific test, the EL34 and 300B with high market recognition have been compared in many ways. We think the sound of FU29 is remarkable, and it is not inferior to these internationally renowned famous tubes at all. Our domestic products also have good products to be proud of.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e \u003cstrong style=\"color: #000000;font-size: 14.0px;font-style: normal;letter-spacing: normal;orphans: 2;text-align: start;text-indent: 30.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eFrom the previous FU32 tube power amplifier we made, we have achieved good sales in both domestic and international markets, and the return and repair rate is basically zero. It can be seen that in any era, as long as it is a good and excellent product, it will be recognized by the market and users. We will continue to work hard!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eWe originally thought that such tubes should have a relatively large stock in the domestic market, but when we made the FU32 power amplifier, we found that it was not what we had imagined. With the decrease in the number of tubes available on the market and the continuous increase in prices, we were also forced to adjust the sales price many times. The same is true for the FU29 tubes used in this machine. When we started searching, we found that there were many sellers selling, and each had a lot of inventory. When we actually purchased, we found that there were only a few tubes in stock, so we actually got a small number of tubes, and we couldn't make too many machines. Players who like it can start early, and this may disappear one day\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eThe schematic diagram is as follows:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img48\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01BCSMCD1OQBVWhgBiH_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img49\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01c7sG4O1OQBVWhdEnE_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"font-style: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 30.0px;text-transform: none;white-space: normal;widows: 2;word-spacing: 0.0px;background-color: #ffffff;float: none;display: inline;\"\u003e\u003cstrong style=\"\"\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eexternal dimensions\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"Font-family: Microsoft Yahei; float: none; display: inline;\"\u003e: 215 Width X190 Height X308\u003c\/span\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\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eOutput power: 40WX2\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\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eAccessories: 220V power cord 1\u003c\/span\u003e\u003c\/span\u003e \u003cspan style=\"color: #0000ff;font-size: 20.0px;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;display: inline;float: none;\"\u003eFM30 * 2, 6N2 * 2\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\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eWeight: Net weight 12.3KG (express fee will be charged at 14KG with packaging)\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\u003cspan style=\"color: #0000ff;font-size: 20.0px;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;display: inline;float: none;\"\u003eThe whole machine quality assurance for two years. The tube is all in-line quality assurance for 3 months (burning filament, cracked screen is not within the scope of quality assurance)\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\" cke-id=\"img50\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01HcJeHU1OQBUhh2Qit_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img51\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01fh9Ck61OQC0vf3CQk_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img52\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN019k7If21OQBUnmDfCW_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img53\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01NShIfr1OQBUi04OEz_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img54\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN0160VkuT1OQBUi047ct_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img55\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01y7ynRI1OQC1wTbWqZ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img56\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01kL6OXQ1OQBUl3BdOd_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img57\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01D9lWAT1OQC1x5Kmxc_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img58\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN019D5mlP1OQBUi06Gdh_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Push-pull FU29","offer_id":66868441252144,"sku":"4565898727374","price":386.0,"currency_code":"USD","in_stock":true},{"title":"Single-ended FU19","offer_id":66868441284912,"sku":"6198998626155","price":276.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN019k7If21OQBUnmDfCW__88221699.webp?v=1779760181"},{"product_id":"brzhifi-bile-machine-tpa-6a2-fever-bluetooth-5-0-tube-small-digital-power-amplifier-home-audio","title":"Bile machine TPA-6A2 fever Bluetooth 5.0 tube small digital power amplifier","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg cke-id=\"img50\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01JfNciM1OQBg8PZn4l_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img51\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01BDOwzt1OQBfabh3pG_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img52\" referrerpolicy=\"no-referrer\" 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referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN011OQBN4PfgIwJEib~crop,0,1600,800,122~_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img69\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN011OQBN5FMVBV5722_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img70\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01cXoPwl1OQBvz8dlmu_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img71\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01oi7SMv1OQBw2ZB4hq_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img72\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01OcQ8pe1OQBw3D74HI_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img73\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01F3QQhP1OQBw03lvNn_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img74\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN014CEZ5g1OQBw185qgF_!!88221699.jpg\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"Silver version without tube","offer_id":66868449378608,"sku":"3833111941490","price":922.27,"currency_code":"USD","in_stock":true},{"title":"Silver with Aristocrat Voice 300B version","offer_id":66868449411376,"sku":"6042174417869","price":1239.39,"currency_code":"USD","in_stock":true},{"title":"Black without tube version","offer_id":66868449444144,"sku":"4220451304578","price":922.27,"currency_code":"USD","in_stock":true},{"title":"Black with Voice of Aristocracy 300B version","offer_id":66868449476912,"sku":"6042174417870","price":1239.39,"currency_code":"USD","in_stock":true},{"title":"Silver with Aristocrat Voice 300B version + a pair of CS8 speakers","offer_id":66868449509680,"sku":"5940147113248","price":3017.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01F3QQhP1OQBw03lvNn__88221699.webp?v=1779760668"},{"product_id":"weiliang-audio-brzhifi-bile-machine-digital-power-amplifier-m5n-home-fever-tube-high-fidelity-bluetooth-5-0","title":"Bile machine digital power amplifier, M5N household fever tube power amplifier, high fidelity Bluetooth 5.0","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg cke-id=\"img60\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN014u1wjm1OQC3LoLU9P_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img61\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01JagvkY1OQC3M2JoCe_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img62\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01vBZckF1OQC3LjGefi_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img63\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01Wr3uMi1OQC3Lmm2KF_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img64\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01c3Ffkf1OQC3L8PljU_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img65\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01L6RSu21OQC3L2bBDB_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg cke-id=\"img66\" referrerpolicy=\"no-referrer\" src=\"\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01L1bxhw1OQC3MgfWd9_!!88221699.png\" width=\"620\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"M5N machine","offer_id":66868453114160,"sku":"5273590826033","price":157.45,"currency_code":"USD","in_stock":true},{"title":"M5N complete machine + 19V3.4A power adapter","offer_id":66868453146928,"sku":"5273590826034","price":181.15,"currency_code":"USD","in_stock":true},{"title":"M5N bare metal without power supply (6BZ6 tube)","offer_id":66868453179696,"sku":"6239858355638","price":183.66,"currency_code":"USD","in_stock":true},{"title":"M5N machine + 19V power supply (6BZ6 tube)","offer_id":66868453212464,"sku":"6075250313421","price":187.5,"currency_code":"USD","in_stock":true},{"title":"M5N machine + 24V power supply (6BZ6 tube)","offer_id":66868453245232,"sku":"6075250313422","price":211.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01lNUUiJ1OQC3LjP1mK__88221699.png?v=1779760776"},{"product_id":"weiliang-audio-brzhifi-parallel-single-ended-a300-pure-class-a-true-electron-tube-amplifier-with-high-fidelity-bluetooth-5-0","title":"Parallel single-ended A300 pure Class A true electron tube amplifier, high-fidelity Bluetooth 5.0","description":"\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;\"\u003e\u003cfont color=\"#ff0000\"\u003e\u003cspan style=\"font-size: 26.0px;background-color: #00ff00;\"\u003e\u003cb\u003eThe current tube is Beijing FM30.\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\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eThe Russian product name of FU29 is FY29, and the American product name is 829B. It is a composite tube that encapsulates two Cambodian emission quadrupoles in the same glass shell. It is used in a power amplifier with the same parameters in a parallel single-ended output. The unit with the same parameters in a tube is used in parallel. The filament voltage of FU29 is 6.3V, the current is 2.25A, the screen voltage is 600V, the curtain gate voltage is 200V, the zero signal screen current is 40mA, and the full signal current is 110mA. The gate bias voltage is -18V, and the optimum load impedance from the screen pole to the screen grid is 13750Ω. The output power (effective value) reaches 10W when the parallel single-ended is used. The circuit of this machine is simple, and a composite tube 6N3 is used as the pre-amplifier, so that a single channel with a 6N3 and a FU29 can complete the power amplifier task, and has a single-ended pure A power output of more than 10W. The actual thrust and hearing are better than 300B. The machine is small in size and unique in shape, but the thrust is strong. Do not use the power of general transistors or digital power amplifiers to compare the actual thrust of this kind of tube power amplifier, because of the high supply voltage and unique output structure, the output internal resistance change of high and low frequency signals is relatively small, and it has good low frequency driving ability. And the sound is soft and smooth, warm and delicate. This is also the reason why the tube power amplifier has not been completely replaced after the emergence of many new technologies.\u003c\/span\u003e\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\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eAt present, the production date of this batch of domestic electronic tubes we have received ranges from six years to eight years. The meticulous workmanship is amazing. It is hard to imagine that we could have completed such fine and complex products ourselves in that era, and the consistency is very good. The specific test has been compared with the EL34 and 300B, which are relatively highly recognized by the market. We think the sound of FU29 is remarkable, and it is not inferior to these internationally renowned famous tubes at all. Our domestic products have also had good products to be proud of. From the previous FU32 tube power amplifier we made, we have achieved good sales in both domestic and international markets, and the return and repair rate is basically zero. It can be seen that in any era, as long as it is a good and excellent product, it will be recognized by the market and users. We will continue to work hard!\u003c\/span\u003e\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\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eWe originally thought that such tubes should have a relatively large stock in the domestic market, but when we made the FU32 power amplifier, we found that it was not what we had imagined. As the number of tubes available on the market decreased, merchants continued to increase prices, and we were forced to adjust the sales price several times. The FU29 tube used in this machine is the same. When we started searching, we found that there were many sellers selling, and each had a lot of inventory. When we actually bought it, we found that there were only a few really in stock, so the number of tubes we actually got was not much, and the machines we could make would not be too many. Players who like it can start early, and this may disappear one day\u003c\/span\u003e\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\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eThis machine is suitable for pushing general bookshelf speakers and some floor-to-ceiling speakers with high sensitivity. The machine has added a new Bluetooth 5.0 receiver module to facilitate wireless connection of portable devices such as mobile phones.\u003c\/span\u003e\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\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eThe schematic diagram of this machine is as follows:\u003c\/span\u003e\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\" cke-id=\"img46\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01MLJysv1OQBVTkIPo1_!!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\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;font-size: 14.0px;background-color: #ffffff;\"\u003e\u003cspan style=\"text-indent: 30.0px;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;font-size: 24.0px;\"\u003eexternal dimensions\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003e\u003cspan style=\"Font-family: Microsoft Yahei;\"\u003e: 194 Width X159 Height X311\u003c\/span\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\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eOutput power: 10WX2 (pure Class A, equivalent to Class A and Class B 50W thrust)\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\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eAccessories: 220V power cord 1 FM30 * 2, 6N3 * 2\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\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eWeight: With packaging, the courier fee will be charged at 10KG.\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\u003cspan style=\"color: #0000ff;\"\u003e\u003cspan style=\"font-size: 20.0px;\"\u003eThe whole machine quality assurance for two years. The tube is all in-line quality assurance for 3 months (burning filament, cracked screen is not within the scope of quality assurance)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 1.12em 0.0px;padding: 0.0px;background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e\u003cspan\u003ePrice of a separate chassis: $150 (including switches, knobs, and power seats)\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\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: 26.0px;\"\u003eThe large knob is the volume control. POWER on the left is the power switch, and BLUE on the right is the Bluetooth control switch.\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\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img47\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01dvOwuO1OQBXLv3pQQ_!!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\" cke-id=\"img48\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01azNj6M1OQBUfDLlug_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img49\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN011bgbzk1OQBvGCHwT5_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img50\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01FnAGYu1OQBUl9eKlu_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img51\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01q0iCm51OQBUn4biaz_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img52\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01DY7kuv1OQBUfDKdGV_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img53\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01ZiIwV01OQBUoFALcY_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img54\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN016fmyUt1OQBvGCGw6p_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img55\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01V2a2vG1OQBUfDLltH_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img56\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01RwAerP1OQBUqxsua6_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img57\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN013uQwnp1OQBUl9dzz9_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img58\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN0123Xzqk1OQBUmsh7Ew_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"With Bluetooth version","offer_id":66868454129968,"sku":"4472623031273","price":336.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN011bgbzk1OQBvGCHwT5__88221699.webp?v=1779760851"}],"url":"https:\/\/gomakerhive.com\/collections\/tube-amplifiers.oembed","provider":"GoMakerHive: Ignite Your Spark into a Blaze.","version":"1.0","type":"link"}