Electro Harmonix ’77 OpAmp Big Muff

BMP 77 OpAmp 577e6ecbf63d

In the late 70s, Mike Matthews and EHX took the Big Muff on a detour from the traditional 4 transistor circuit in favor an IC-based circuit. It sounds very similar to the traditional Muffs, with the tone control being a little more flat than the traditional mid scoop. The circuit uses two favorite opamps from … Read more