How much DC offset are you talking about ?I don't see a trim pot anywhere, so I was wondering which transistors need to swapped out for better matched pairs? Some of them aren't labeled, so I'm not sure what I need to replace. Thanks!
Oh you can get them. Kinda pricey though. Especially to get matched pairs. You would need maybe 20 or more of each to obtain Hfe matched pairs.2SC2240BL and 2SA970BL would be good choices if you can find them
Agreed.. If your not hearing any unwanted thumps -- Leave well enough alone.Some things are best left alone. You could put in matched pairs and still have significant offset. You need to analyze and understand the circuit, and probably replace more than transistors. This thread was interesting- http://audiokarma.org/forums/index.php?threads/adcom-gfa-1a-dc-on-output.635549/