OP AMP BIG MUD

This is my version of the now famous and very sought after “Op Amp” version of this great pedal. The original was made simultaneously with the "standard" version 3 but used op amps instead of transistors. It is close in tone, still with scooped mids but a much bigger, “rounder” bottom end. This version had the tone stack bypass switch but I run it as a normal (scooped) or flat response while still keeping the tone control intact for more options.This is the version that is famous for its use by Billy in Smashing Pumpkins but I prefer to think of it as the first three Dinosaur Jr albums. It's a big, fat, thick wall of sound BM.