a few weeks back I came across this on aliexpress, i know it's Chinese board with no schematics and good luck to find and fix all the bugs and everything but i thought it's only 7 bux, what can go wrong ? lol , i had good experience with this seller and so i ordered one and received it today !
it was bigger than i thought 7" x 6-3/4" , and it's way more complex than i expected. has 40+ transistors 3x tl081.
any how, just wanted to share this here and report it as i go, let me know if you guys can figure anything out of this :
GZLOZONE HV-5-TB Headphone amplifier PCB
Cheers
it was bigger than i thought 7" x 6-3/4" , and it's way more complex than i expected. has 40+ transistors 3x tl081.
any how, just wanted to share this here and report it as i go, let me know if you guys can figure anything out of this :
GZLOZONE HV-5-TB Headphone amplifier PCB
Cheers

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I suggest a first step would be for you to trace out a schematic and then come back and post it here when you are done.
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