MXR® SUPER BADASS® VARIAC FUZZ M236 The Super Badass Variac Fuzz is aggressive, biting, and highly versatile, featuring a Variac control to change the pedal's voltage from 5V to 15V for a range of fuzz tones. Go from vintage saggy saturation to wide open transparency with the twist of a knob. This pedal can be powered by a 9-volt battery, a Dunlop ECB003 9-volt adapter, or the DC Brick™, Iso-Brick™, and Mini Iso-Brick™ power supplies (not included).