DIY HV2 SE Class A Headphone amplifier kit base on Audio Technica HA5000 L7-6

    • Features：

      note

            This is a kit that you need to assemble yourself.


      Highlights of HV2-SE technology:

      1. Miniaturization: Reduce the original super-large PCB to the current 10*10CM to suit all types of chassis.

      2. Modify the double-single independent power supply mode, and modify it to filter and stabilize the power supply after the two-channel sharing one cow and one bridge, reducing the input cost.

      3. Change the electronic filtering mode of the original machine to supply power to the input stage and voltage amplification stage, and the ripple coefficient is lower.

      4. Optimize the first-stage constant current source, optimize the adjustable single-tube JFET constant current source to a double-loop constant current source, and set the current to 1MA per tube, which is consistent with the original machine, reducing the debugging steps.

      5, cancel the coupling capacitor input part of the original machine, retain the pure direct input, after comparison, pure direct input sound quality is the most direct, less dyed

      6, to maintain the original features, signal input and feedback using AB carbon film resistor

      7. Push the C3421-A1358 with the current level changed to the same gate.

      8, remove the extremely complicated protection circuit, players can choose to add (without) protection kit (this shop has matching)

      Recommended input voltage: AC15-0-15, no less than 30VA, recommended R-CORE,

      Commissioning: final tube current 100MA

            Adjust the 1K adjustable resistor so that the TP point voltage is 47MV

            Adjust the 100R adjustable resistor so that the midpoint voltage is infinitely limited to OMV


      Package Included:

      1PCS x Rectifier filter power supply board 125V / 10000uF For Dual power amplifier

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