Band of gypsies tone in a box my friend.
Intentionally mismatched (for harmonic content) silicon transistors that snarl and spit... not for the meek! If you put the "Fuzz" on 10 you will rip, and you might get all sorts of oscillation and weirdness...
This fuzz is very lightly used and ships safely and swiftly! Feel free to call us if you have any questions about this pedal.