[quote author="Samuel Groner"]
[/quote]
I will do. Currently I am in England, and the preamp is in Edinburgh (!) at my parent's house, so I may need to wait until Christmas before I can start working on it again. IIRC the hum was only present at low gains....
Can you post/PM/e-mail an audio sample (with 150 ohm resistor source at full gain)? I'd be interested to analyse it because just recently I started to collect my design ideas for "low hum" design.I still have some 50 Hz noise though...
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I will do. Currently I am in England, and the preamp is in Edinburgh (!) at my parent's house, so I may need to wait until Christmas before I can start working on it again. IIRC the hum was only present at low gains....