We took the Big Muff Pi circuit and simply shrunk it without changing its rich, creamy, violin-like sustain and sound. The Nano Big Muff Pi works and sounds identical in every way to our classic NYC Big Muff Pi. Get a piece of the pi for yourself! - Crushing distortion - Singing sustain with attitude - Compact, rugged nano enclosure - True bypass - Adjustable tone - 9-volt battery included - Optional 9.6DC-200 power supply available - Dimensions in inches: 2.75 (w) x 4.5 (l) x 2.1 (h) - Dimensions in mm: 70 (w) x 115 (l) x 54 (h)