The Big Muff is a legendary distortion pedal known for its dirty, rubble sound and massive sustain. It is specifically designed for fans of long note solos. The pedal emphasizes low midrange frequencies and produces a gritty, dirty tone with extended sustain. Over the years, there have been multiple versions of the Big Muff, but they all share the same circuit diagram and can be built on the same PCB. The variations mainly involve different values of the components used in the circuit.

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