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Assembeld KHD2000 discrete Headphone amp board base on HA5000 amplifier
Item ID：16041906
List Price：US$46.00
Price：US$41.50
Payment Terms
paypal
Shipping
ship out within 2 working days
Availability
in stock
Description
Product Q & A
Review
Works voltage: +/-DC24V
PCB size: 160X75X2mm
Can load 4-600ohm headphones
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
*In order to achieve a better sense of hearing, we are here to carry out the parallel class A power supply, low ripple factor, better sense of hearing.
Note: this is a assembled and tested board.
this is the kit link http://www.diyerzone.com/headphone-amp/amp-kit/diy-kit-khd2000-full-discrete-headphone-amp-kit-base-on-ha5000-amplifier.html
this is the pcb link http://www.diyerzone.com/pcb/khd2000-full-discrete-headphone-amp-bare-pcb-base-on-ha5000-amplifier.html
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