{"product_id":"classic-audiophile-grade-pure-class-a-tone-preamp-fv-2024-high-and-medium-bass-three-band-adjustment-respectively","title":"Classic audiophile grade pure Class A tone preamp FV-2024 high and medium bass three-band adjustment respectively","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img72\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01cYRX9o1OQBwx3RHLu_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eFV-2020 This machine has been improved and upgraded on the basis of the F1 pre-circuit in my store.\u003c\/span\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eOriginally, this machine has sold thousands of units in my store, and user satisfaction is relatively high. Now it is newly designed and produced according to the aesthetic vision of modern users. This machine has changed the layout and materials on the basis of the original machine, and the two channels are independently powered and amplified to minimize the impact of mutual crosstalk. Ensure that the sound is purer and more accurate. This machine is powered by a Class A power supply, which can ensure that the warm tone of the original design is fully exerted.\u003c\/span\u003e\u003c\/strong\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThe standard operating amplifier of this machine is 4 single operating amplifiers (two single operating amplifiers are used for each channel)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img73\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01FSDDIN1OQC2PFgr5l_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img74\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN0114uHAo1OQBuDzslKQ_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eDual transformer power supply, complete independence of left and right channels\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img75\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01uGgBEM1OQBwuyY6qG_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eFV-2020\/2024 both use ALPS 16 volume potentiometers and B-type tone-specific potentiometers\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img76\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01FuAeec1OQBwwkXhtw_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003eThe following is the introduction of FV-2024:\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img77\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01myjnXv1OQC2P8LiLV_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e      \u003cspan style=\"font-size: 26.0px;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThe FV-2024 adopts the STK3048 packaged in Sanyo thick film as the pre-amplifier, and the internal\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 26.0px;\"\u003e\u003cstrong style=\"box-sizing: inherit;font-weight: bold;color: #0000ff;font-size: 22.0px;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=\"background-color: #ffff00;\"\u003eDual operational amplifier structure, the highest voltage can reach ± 50V, which can significantly improve the dynamic range of music, with minimal harmonic distortion. In actual tests, the treble becomes more transparent and delicate than the general operational amplifier, and the bass becomes elastic, sounding very comfortable. This is not the effect that ordinary operational amplifier circuits can achieve.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 24.0px;\"\u003e      \u003cspan\u003eThe STK3048 is a two-channel single-column thick film package with a total of two stages inside, and the input stage is protected by a differential amplifier. The resistor-capacitance series phase compensation network of the collector can prevent the transient distortion of the input stage due to burst signals. A set of mirror current sources is connected between the two collectors. The main voltage amplification stage is a common base and common emitter circuit. 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 large excitation power to the subsequent stage. The two-stage amplifying tubes are supplemented by a constant current source as a load, which has strong suppression of power supply ripple.\u003c\/span\u003e\u003c\/span\u003e \u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img78\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN014PLIWn1OQC2P8LB6i_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eThe famous sealed green Rubik's cube transformer has high efficiency, small magnetic leakage and good output characteristics\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img79\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN01r8nYr41OQBvoETa8h_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eThe bottom of the red heat dissipation is the STK3048 module, and the periphery is equipped with ELNA, Siemens and other audio capacitors\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img80\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01lGvUUq1OQBvqdcZBX_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img81\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i1\/88221699\/O1CN01Pix78F1OQBwyYmPon_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eAll use solid all-aluminum knobs, full of texture\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img82\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i4\/88221699\/O1CN016KTRnA1OQBu9lhGC0_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 22.0px;\"\u003eCustom Real Gold Plated RCA Terminal Blocks\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img83\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01zLtik61OQBu8emouF_!!88221699.jpg\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img84\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i2\/88221699\/O1CN01e9wKcR1OQC2PFgWSA_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg align=\"absmiddle\" cke-id=\"img85\" referrerpolicy=\"no-referrer\" src=\"https:\/\/img.alicdn.com\/imgextra\/i3\/88221699\/O1CN01gonath1OQC2OiAwqI_!!88221699.png\" style=\"max-width: 750.0px;\"\u003e\u003c\/div\u003e\n","brand":"GoMakerHive: Ignite Your Spark into a Blaze.","offers":[{"title":"FV-2020 high equipment--OPA1611 operational amplifier","offer_id":66881778647344,"sku":"4525623934606","price":247.47,"currency_code":"USD","in_stock":true},{"title":"FV-2024 high equipment--STK3048","offer_id":66881778680112,"sku":"5574016996957","price":260.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/2367\/2112\/files\/O1CN01FuAeec1OQBwwkXhtw__88221699.webp?v=1780110728","url":"https:\/\/gomakerhive.com\/products\/classic-audiophile-grade-pure-class-a-tone-preamp-fv-2024-high-and-medium-bass-three-band-adjustment-respectively","provider":"GoMakerHive: Ignite Your Spark into a Blaze.","version":"1.0","type":"link"}