The secret of the Boss MD-2 Mega Distortion Pedal is a dual-stage distortion circuit with an added Gain Boost, plus Bottom and Tone controls for crushing distortion with massive low end. If new-school metal is your thing, the Boss Mega Distortion is your pedal.Produces extreme, low-end distortion for modern metal and hard rock Gain Boost circuit creates huge distortion and sustain regardless of level New Bottom control for bottom-heavy distortion matched to 7-string guitars Tone control adjusts balance between high and low frequencies