
Wish your muff was bigger? The PedalFarm BMP Professional Gut Transplant produces the biggest and muffiest sounds in six different variations. This DIY complete electronics replacement kit includes everything you need to transform your big box NYC Muff into a custom boutique pedal.
All PedalFarm products are built by the PedalFarmer himself, using high quality components and detailed craftsmanship. PedalFarm offers exceptional quality and unbeatable customer service at an unbelievably reasonable price.
The PedalFarm BMP Professional Gut Transplant comes in six different variations. Each variant has its own unique LED indicator light color, as shown below. The variant designation of an individual device can also be found on the PCB itself.
VARIANTS:
TR73 Based on a late model “triangle” version (Yellow LED).
RH74 Based on an early “rams head” version (Pink LED).
IC78 Based on an op amp version from 1978 (Orange LED).
V679 Based on a v6 muff from 1979 (Red LED).
CW92 Based on an early “civil war” version (Blue LED).
GR94 Based on a green Russian version (Green LED).

This kit includes:
- Main PCB assembly, with attached control pots, LED, in and out jacks, DC jack, and 9v battery terminal.
- Footswitch assembly with connector cable, washers, and nuts.
- New LED bezel.
- 3 vintage style knobs.
- Mini keychain screwdriver
- Instruction Manual. (Download here)
PedalFarm is happy to drill your enclosure for you, free of charge. PedalFarm will also be happy to install your new guts for a small fee, if you choose.
Contact us from the contact page if you want custom work such as this done, BEFORE ordering. The turn around is very fast. Buyer pays shipping.
Tristan Kennedy (verified owner) –
A very great sounding version of the op amp big muff and a really well put together kit!