The DigiTech Grunge Distortion Pedal is designed for loud, distortion-obsessed guitarists who want an edge-of-chaos sound. The Grunge provides chunky rhythm, heavy grind, and amazing sustained leads. It's been a top seller for over a decade. Not buzzy like other metal pedals. Includes Loud (level), Low, High, and Grunge (distortion) controls, as well as an amp output and dedicated mixer output with cabinet emulation circuitry.