BOSS RV-3 reverb / delay INFINITE FEEDBACK mod
Infinite repeats on the RV-3 to extend a lead or killer pads! And unlike the similar mod to other delay pedals, no need to worry about self-oscillation, which makes the RV-3 perfect for this application.
Momentary normally open switch wired to MIN and center lug of Tone/Feedback pot
Another mod I did is to add a TONE pot on the side. It's wired exactly like like a guitar's tone pot, out of the center lug of the LEVEL pot. The new pot's center lug has a .022 cap that then goes to ground.
In delay mode the real "TONE" knob is actually feedback. In Delay or Reverb + Delay modes, you can now still have the effect sit back in the mix.