While I know we've posted this previously, I found this layout to be one of the more useful ones. Look into our archives / previous posts for more Valvecaster layouts. Power source I was getting better results with 12v 1A, see Garth's 24v version below. -K Another idea is to incorporate a boost of your own choice (i prefer the alembic stratoblaster) and hook that up before C1 . This gives the pedal an extra boost to the circuit so it distorts more. I would use separate pots for this, not a dual pot. WIRING DIAGRAM w/ LED & True Bypass Footswitch GARTH's VALVECASTER w/ MODS @ 24V