EHX™ BIG MUFF PI™ IC OPAMP REPLICA RTS PCB

The ready-to-solder (RTS) PCB for our Electro-Harmonix™ Big Muff Pi™ op-amp version replica: wonderful, full-bodied distortion.

About the effect

Most Big Muff Pi™ versions over the years used discrete transistors, from the early Triangle and Ram's Head units through the Russian-made pedals. Electro-Harmonix™ also built an op-amp (IC) version, and this board replicates that one. Expect the same thick, sustaining Big Muff™ character with its own op-amp flavor. Our Big Muff™ project page covers the op-amp version at the bottom, below the transistor versions, with its own parts list, schematic and layout.

Specs

• PCB dimensions: 5.5cm by 4.1cm
• Solder mask, plated-through holes and screen-printed part placement
• Jumpers are included in the top layer, so there is no need to solder in any jumpers

Build resources

• Complete instructions for this PCB (op-amp version at the bottom of the page)
• Op-amp BMP bill of materials, schematic and parts layout and wiring diagram

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