The Electro-Harmonix Nano Big Muff Pi is a compact distortion/fuzz/overdrive pedal that delivers the classic Big Muff Pi sound in a pedalboard-friendly nano enclosure. Introduced in the late 1960s by Electro-Harmonix, the Big Muff Pi quickly became legendary for its thick, sustaining fuzz tones, helping define the sound of rock, alternative, and blues guitar. Its iconic voice has been used by players such as David Gilmour of Pink Floyd, Steve Turner of Mudhoney, and Jimi Hendrix, among others. The Nano version uses analog circuitry to reproduce the same creamy sustain and rich fuzz, from subtle overdrive to massive, wall-of-sound distortion, with simple Volume, Tone, and Sustain controls. It features true bypass switching, keeping your guitar signal clean when the effect is off, while packing the Big Muff’s historic tone into a small, rugged pedal perfect for modern boards.