Well I just built this beast and its sounds freaking great, but I think I have some issues to iron out. If anyone can offer some advice to a newb, it would be greatly appreciated!
1.) First and foremost is noise. It just screams high pitched noise when not playing. Even with the trimpots at like 40% or less. It's even very noisy with the trimpots all the way down.
2.) If the trimpots are over 50% it squeals and shrieks like crazy. Something has to be screwy.
3.) When the pedal is off, the volume knob produces a low amplitude high pitched squeal when turned nearly all the way up.
4.) If the gain knob is past 85-90% the pedal goes quiet.
I used a 1.8A laptop power supply that puts out 12.6v. I thought it might be the issue, so I tried a known good 9v supply with the same outcome.
I swapped tubes around a little with no difference. I'm using a Tung Sol 12at7, two Tung Sol 12au7's, and one EH 12au7.
As far as I can tell, everything is grounded well. Poking around produces no changes in sound which would suggest bad connections.
Any idea where I should look first? I will upload any pics or sound clips if requested. THANKS!