Electro-Harmonix Big Muff Pi Fuzz / Distortion / Sustainer Pedal. The iconic NYC original, defining rock guitar tone for over 40 years and favored by legends from Hendrix and Santana to Pink Floyd and The White Stripes. Delivers rich, creamy, violin-like sustain with crushing distortion and an adjustable tone range from high treble to deep bass. Features Volume (output level), Tone (EQ shaping), and Sustain (distortion/sustain amount) controls, Amplifier jack for output, Input jack for signal, and a Footswitch with LED to toggle effect/bypass. True Bypass ensures signal integrity. Product Specifications: Circuit Analog, Bypass True Bypass, Audio Mono, Power 9V battery included (optional 9.6VDC-100mA adapter), Dimensions (in) 5.5 x 2.95 x 6.88, Current Draw 3mA, Year 2000, UPC 683274010144.