Finished KHD2000 Full discrete Headphone amp base on HA5000 amplifier
Input voltage: AC 110V or 220V (for choose)
Front panel default silver. (we also can provide black front. if you need black.Please let me know.)
Can load 4-600ohm headphones
Weight about 4.5kg
Full Aluminum chassis/ ALPS 16 type Potentiometer/ US CMC RCA Terminals/high quality Toroid transformer/ 4pcs Original Nichicon 10000uF/50V main capacitors.
KHD-2000 reference HA5000 circuit, which optimized and improved the following points:
*Single FET input stage constant current source modified to lower distortion bicyclic BJT current source, and set the fixed constant value, like the original machine, reducing unnecessary debugging
*As the end Transistors using MOS transistors, The MOS tube itself has a temperature coefficient (warming), and then we changed the original machine single BJT tube (N tubes) as VBE style, directly on the tube BJT (NP) do VBE voltage control adjust.
*Power output tube using the unit in parallel to enhance the dynamic driving force and details.
* Join the feedback capacitor, the midpoint voltage regulator, make the difference is less than 2MV when cold or hot machine