Electro-Harmonix Big Muff (opamp '77, '78)

This project was developed from the following sources: Analogguru's EH_BigMuffPi_OP-77 schematic, Analogguru's EH_BigMuffPi_OP-78 schematic.

The opamp version of the Big Muff is said to be 'not as scooped' so I decided to build it. The PCB does fit in a Eddystone B enclosure but I haven't mounted the tone stack switch on/off.

Build pictures:



Layout:


Tone stack simulation (from the Duncans Amp Tools Tone Stack Calculator):

Manifesto

The blog purpose will be to make available the information and layouts attained while building DIY pedals for bass and guitar.