Earthquaker Devices Sunn O))) Life Pedal V3 Distortion Effect Pedal w/Box - UsedThe Life Pedal by EQD is a bone crushing take on the classic rodent style distortion, with added octave up, and boost options added to it. The right side, "Amplitude" is a classic distortion, with amplitude, filter, and distortion knobs. The "filter" knob lets you choose between no diode OpAmp, dual silicon diodes with LED for asymmetrical clipping, or the traditional dual silicone symmetrical config. The center foot switch, "Octave", turns the octave