Electro-Harmonix GREEN RUSSIAN BIG MUFF Distortion/Sustain PedalReissued and repackaged in a smaller design, the Electro Harmonix Green Russian Big Muff is a pedal designed to provide heaps of distortion and sustain. The pedal was released first in the 1990s and is now back in a smaller, though equally army green chassis. Your sound is secured through three knobs: Volume, Tone, and Sustain. Sustain controls the amount of distortion, fuzz, and sustain, Tone controls your bass to treble ratio, and Volume dictates