With the ZVEX Fat Fuzz Factory's ingenious 'SUBS' function, this means that the pedal can oscillate at much lower registers for thunderous synth-like textures that'll shake any room or venue with fuzzy glitch sounds. And based on ZVEX's sonic experiments, this extra "fatness" lends itself particularly well to bass guitar - but absolutely rips on electric guitar too!
Despite its small form-factor, the ZVEX Fat Fuzz Factory has a bunch of tone-warping knobs that enable precise sonic manipulation. 'Volume' is self-explanatory, but the others are far more idiosyncratic and have a dramatic effect on the pedal's overall sound: