Electro-Harmonix Op-Amp Big Muff vs JAM Pedals Red Muck Mk.2 Fuzz/Distortion
The Electro-Harmonix Op-Amp Big Muff and the JAM Pedals Red Muck Mk.2 Fuzz/Distortion are both pedals sharing fuzzy, full. The Electro-Harmonix Op-Amp Big Muff leans sustaining and scooped. The JAM Pedals Red Muck Mk.2 Fuzz/Distortion leans mid-forward. Current prices: $86.18 vs $227.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.40% — somewhat different
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Genres both listings are associated with.- Shoegaze
- Alternative Rock
- Rock
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Derived from overlapping tonal signals across both listings.- fuzzy
- full
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$86.18via Reverb
$227via Reverb
The Electro-Harmonix Op-Amp Big Muff is the late-1970s IC-based version of the Big Muff, famous as the crushing, scooped wall-of-fuzz on Smashing Pumpkins' Siamese Dream. Unlike transistor Muffs it has a more aggressive, mid-scooped, slightly gated voice with massive sustain. It suits alternative rock, grunge and shoegaze players seeking thick, saturated, layered fuzz.
The JAM Pedals Red Muck MK.2 Fuzz Distortion V2 is an updated version of the boutique Athens-built Big Muff-style fuzz circuit. It retains the dense, scooped-midrange fuzz character of the original Red Muck while adding expanded tonal shaping options that make the circuit more adaptable across different amplifier and guitar combinations. Built by hand in Athens, Greece, the MK.2 addresses tonal limitations of the classic Big Muff design by offering greater control over low-end weight and midrange presence. It suits shoegaze, alternative rock, heavy psych, and wall-of-sound recording contexts where thick, sustained fuzz density is the primary requirement. Component selection maintains the boutique standard of JAM Pedals, and each unit is assembled with individually matched components for consistent response.
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Genres this gear is documented as being used in.- Grunge
- Blues
- sustaining
- scooped
- lush
- mid-forward