Classic analog op-amp powered fuzz/distortion pedal effect. Delivers 70s circuit with symmetrical hard clipping. Based on the most famous "rodent" distortion of the 80s. As you turn down your guitar volume, it cleans up, but not all the way. Unique Filter control. Compact, pedalboard friendly design. Comes with a 9Volt battery, accepts an optional EHX9.6DC-200 AC Adapter. Features True Bypass for maximum signal path integrity in bypass mode.