We take the Holy Grail (big box version) and give you two independent and foot-switchable Reverb settings instead of just one. There's two footswitches on this pedal; the footswitch on the left turns the pedal on or off. The footswitch on the right lets you switch between the two Reverb settings (Red/Blue). We install a nifty bi-color red/blue LED so that you will visually know which Reverb setting you have engaged. Two knobs on this pedal are all you need, Red and Blue. Each knob let you dial in the amount of Reverb.
We are not offering this mod to the Holy Grail Nano or the Holy Grail Plus or Holy Grail Deluxe.
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711 Main Street
Grandview, MO 64030