HA-PRO Single-ended MOSFET

CLASS A Headphone Amplifier

Some material, convenient friends of the production.


Need to pay attention to, it USES AC 24-0 input, low voltage will make failure noise voltage.

Had better not exceed AC28-0.


10 the resistance controls the MOSFET IQ,

About 650 MV / 10 R = 65 MA

It is a, very hot. Headphone amplifiers :flame:
 

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shouldnt R16 R31 be removed ? it will form RC filter with headphone impedance -and you cant compensate for cable capacitance this way.
i also used line filter as no filtering device after 7824 ,next time use a low noise transistor please +1 irf610 wont be much of an expense