Author Topic: Big Muff (Mudbunny Board) Tone bypass on a Switch  (Read 80 times)


  • Diode Destroyer
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Big Muff (Mudbunny Board) Tone bypass on a Switch
« on: July 11, 2018, 09:54:53 AM »
Greetings y'all!

I feel in love with the tone bypass sound of the IC Muff (Pig Butt) and loved that you could put it on a foot switch and essentially have two different pedals in one circuit. I'm trying to do the same with the Mudbunny PCB now and am having trouble wrapping my head around it. I've been trying to use the Pig Butt schematic to cross reference the switching with the Mudbunny schematic but so far my efforts have not been fruitful. I'm thinking the start of the bypass would be around C10? I'm sure people have done this mod before I was wondering if I could get nudged in the right direction!

I make some pedals with my wife from time to time, we're called EAR electronics.


  • Transistor Tickler
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Re: Big Muff (Mudbunny Board) Tone bypass on a Switch
« Reply #1 on: July 11, 2018, 11:41:23 AM »
This could be useful to you:

Here's the document of the Pig Butt:

And here's the Mudbunny:

But I suggest a thing. The Mudbunny is based on the traditional transistor Big Muff, so you should search something about the "tone bypass mod" for the Big Muff.

I attached a schematic. It has two extra caps C15 and C16 for some reason I still am not understand, and an extra resistor, R28, to avoid a volume boost. Try to make some experiments.

Let us to know! ;)
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