MagneQuest/Peerless Forum

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RE: SET Headphone amp

Posted by OldNuke on August 3, 2016 at 11:14:08:
I do have a buzz that is apparent on the lower settings on the volume pot, disappears as I turn further up the pot then reappears and gets louder as I turn up the pot. The sweet spot is about 30% - 50% on a 100k pot. I assumed it was interference I could clean up with a better potentiometer and/or more padding.
The power supply is a CLCRC setup; 100uF/10H/100uF/360ohms/2.2uf. Thinking back maybe the last cap was the smallest oiler I had on hand. I'll experiment with a 1K resistor and 70 - 100 uF cap for the last filter and see what that does.