Let's just get out of the way that this is not a muff variant. It's the result of some very fruitful breadboard tinkering and inspiration.
However, it does have that huge wall of fuzz sound as on early Smashing Pumpkins recordings. My approach was to aim for something closer to the very raw sounds on Pisces Iscariot than the more polished sounds of other Pumpkins albums and this is what I came up with:
https://soundcloud.com/shoepedals2/sets ... z-smashing
Not sure I captured the full impact of it in the room, really, but this is a very explosive fuzz when you step on it and works well both with cleaner amps and dirty amps. I've even gotten good results with the high gain channel of my JCM type amps.
Controls: Volume, Tone (non-muff style. Treble rolloff only for a wooly and not very mid scooped sound), High and Low Saturation Modes Footswitchable, Gain, High Saturation Voicing Switch.
Price: $145 to USA