Distortion/overdrive effect pedal. This is the classic RAT tone. The standard that all other distortion devices are measured against. Heard on thousands of recordings, it has helped define the sound of the past three decade's most influential bands. 100% analog signal path; Pro Co's classic, virtually indestructible steel enclosure; Heavy-duty, industrial footswitches, knobs, and jacks; On/Off LED indicator; Sloped face for easy stomping; Glow in the dark graphics; Military-spec glass-epoxy circuit board; AC jack (RPS-1 power supply sold separately); "No tools required" battery compartment (9 volt not included). Dimesions: 12.2 x 11.4 x 8.4 cm, Weight: 454 g.