MXR BLUE BOX OCTAVE FUZZ PEDAL
The Blue Box Octave Fuzz drops your guitar signal two octaves down and combines it with gnarly fuzz for huge subterranean tones.
This pedal can be powered by a 9-volt battery, a 9-volt adapter, or the DC Brick™, Iso-Brick™, and Mini Iso-Brick™ power supplies (not included).