This baby is designed for those who want an in-your-face wall of guitar sound jumping of the speakers. The boost button and the tone knob enable you to dial in every sound you like right from ultra fuzz to smooth jazz sounds. In "OFF-MODE" (with the boost-function bypassed) the Mudhoney delivers moderate gain and a smooth rich sound favoured by many jazz-guitarists. For a more hairy sound, -just hit that "boost-button" and feel the rumble from hell.