Hello and let's talk about (Big) Muffs!

[Mufftastic]

Greetings.  Long time lurker, finally joined. 

I've built a few pedals over the years and my tube amp is totally DIY. 

I've never bonded with any of my DIY pedals, but I always liked big muffs, so I ordered a GGG PCB and built a muff to violet ram's head specs.  I changed the treble side tone capacitor to 6.8nF for more midrange.  I also left out the 3 feedback capacitors. 

I love the "more mids" sound, so I cracked open my BMP tone/wicker and removed the 3.3n resistor in the treble side of the tone stack and scanned on a 10nF for a flat mids sound. 

With both pedals I get a much better muff tone.  I swap out my GGG muff and my EHX muff but honestly I'm happy with both.  I highly recommend these mods (and the GGG board).

[runmikeyrun]

Awesome!  Welcome to the addiction forum. 

Google R.G.'s Technology of the Big Muff and print it out.  Invaluable to how it works and makes modifying it much, much easier. 

Next one you build, socket the clipping diodes, transistors and coupling/input/output caps, along with the components in the tone stack.  Also, order all sorts of different diodes, caps and transistors when you order the kid.  You'll spend hours holed away in your workshop, but you will get the PERFECT muff when you finally emerge- starving, dehydrated, and half-deaf, but with a huge smile on your face

Great, now I want to build another one.  Thanks   

[Kesh]

Not sure about the CMOS but i really like the tone section of this muff, using centre off switch to get a third choice

[keto]

I built one with no tone control AND no fuzz control - always on, always maxed.  Just a volume.  High gain, so 5088 transistors.  It is noisy when on, but I've never heard anything fatter!