The Rewolver is a multi-fonction JFET Driver. You got two Boosters in cascade (POW, POW) controlled by a Master Volume (BANG). That gives an infinite number of settings depending on which knob you choose to crank up. Turning up the Boosters give you a sweet saturation from the transistors, and the Master Volume makes the amp break up. You'll be impressed by the versatility of this small footprint pedal. Use it as a Distortion or as an Overdrive in the beginning of your effect chain, or use it as a clean boost at the end. A world of options in this pedal!