Is a distortion pedal with a volume knob only that was designed to blend with your existing setup and retain its character rather than overpower it. Reacts well with the guitar"s volume knob. Retains string/note definition and has a solid low end without being muddy that holds together well with drop-D tuning. Does this all without having to play at a deafening volume. The Great Wide Open features an indicator LED, true bypass and a DC jack.