This ear-shattering pedal is not for the weak! The Rampage is specifically designed for the players who want grungy/raunchy/ultra-high gain with endless sustain and very little noise. What makes the Rampage so brutally offending is its special "Scoop" control. The Scoop allows a mid cut of up to 30dB, making any amp scream beyond its capacity. The Bass control adjusts the low frequency levels (+/- 15dB). The Treble control adjusts the high frequency levels (+/15dB). The Level control adjusts the overall volume level. The Sustain control adjusts the level of the distortion.Special attention was given to the Rampage to allow up to 75dB of raging gain with amazingly low noise. Simply crank up the Sustain parameter, touch a note, and let the feedback and harmonics go!