Pedal Profile: The EHX Op-Amp Big Muff — Fuzz With Bite

If you're into heavy fuzz that cuts through the mix without turning into a mess of low-end mud, the Electro-Harmonix Op-Amp Big Muff should be on your radar. Made famous by Billy Corgan of The Smashing Pumpkins during the Siamese Dream era, this version of the iconic Big Muff circuit trades the usual transistor-based gain stages for op-amps — and the result is sharp, punchy, and undeniably aggressive.