Ok, ready to tackle my hum issues. Firstly, C14 and 15 are the nice big ones; I don't imagine the trouble is having too small of caps here.
It passes audio just fine, save for the hum as seen below.
The volume knob does change the volume of the hum. The 140 @ -44db is with the gain and output knobs most of the way up.

Any advice on what to look for? Ripple was the first to check. What are the acceptable voltages? PSU B+ and where else to look?
Also upon first power up, R33 got real hot once, but now it's ok.
Any help would be appreciated. :oops: thanks!