The Super Badass Variac Fuzz is a dream come true for guitar players chasing vintage fuzz tone. This tasty fuzz is aggressive and biting, and with the twist of a knob, you can drag it into that ''dying battery'' territory much prized by tonechasers - no need to manage a collection of half - dead batteries. To create the Super Badass Variac Fuzz, the MXR design team dusted off a rare vintage silicon circuit, tuned it up, and added a Variac control so you can set the pedal's voltage anywhere from 5 to 15 V. For that wonderful saggy fuzz effect you get as a 9 V battery loses its power, just lower the voltage by turning the Variac knob counterclockwise. Increasing the voltage raises the effect's headroom, opening up the fuzz for a more transparent sound at 15 V.