Are you bored with "conventional" distortion boxes? The Blue Box from MXR is a monster distortion pedal, giving you both an aggressive fuzz that'll rip your head off and an unpredictable (in a good way!) two-octave-down tone generator. It's dead-simple to use: turn the Output knob to dial in the amount of fuzz you want and use the Blend knob to dial in how much double-octave sound you want. More conservative settings on the Blend control yield familiar sounds ("Fool in the Rain"). Dial the Blend up to 100% and the MXR Blue Box starts spitting and glitching 8-bit-style nonsense on par with smashing an Atari (again in a good way!). There's a ton of fun and chaos to be had here, which is why the MXR Blue Box has become a go-to pedal for the sonically adventurous.
A staple of noise rock and beyond - MXR's Blue Box!