Groovy, its back to the future from the 1960s Mozztronics has re imagined the classic silicon fuzz circuits from the 1960s. We have added our treble cut & treble boost control, and tweaked the circuit for a more usable range of control. We also added a contour switch for bright / normal response. The end result is the Mozztronics FZ-1 silicon fuzz. We use specially selected uber high gain transistors in this beast. FUZZ controls the amount of dirt from a nice crunch to a maximum damage ultra nasty fuzz, TONE controls the amount of treble in the output, from treble cut to treble boost, and VOLUME adjusts the overall volume out of the pedal, and there is a CONTOUR switch to select between bright and normal. "Excellent Fuzz"  Bob Spencer, Mozztronics uses the industry standard Boss style 2.1mm center negative 9V DC socket for the power supply connection.