It's a sound that's been described by noted Big Muff collector and historian, Kit Rae, as: "a huge, crushing Big Muff sound with more crunch… great for grungy, wall-of-sound distortion, heavy rhythm playing and heavy leads.".
This product would be a great fit for guitarists who prefer a nostalgic, distorted sound and want to make their amplifiers or devices sound like a popular 1970s distortion pedal.