The Big Muff is a popular guitar effects pedal known for its distinctive fuzz sound. Originally designed in the late 1960s by the company Electro-Harmonix, it has become a staple in rock music. The pedal is celebrated for its ability to create a rich, creamy distortion that enhances the sustain of notes, making it a favorite among guitarists. Over the years, the Big Muff has undergone various revisions, leading to different versions like the Big Muff Pi and the Russian Big Muff. Its unique tone has been used by many famous musicians, including Jimi Hendrix and David Gilmour, solidifying its place in music history.