The mad genius behind Apocalypse Audio (who is also the sound guy for Chicago’s INDIAN) is a mastermind in designing really excellent circuits.
Building from his suggestion, I took his Four Horsemen (overdrive) circuit and ran it into his Toecutter (fuzz) circuit. Each effect has it’s own on/off switch, so they can be run independently, or together.
The result is an insanely heavy, sludgy, unholy mess that commands hours of eardrum destruction.