MXR M236 Super Badass Variac Fuzz Fuzz [Item]

Power supply 9V: 006P/9V dry battery or 9V AC/DC adapter Equipped with circuit voltage control (VARIAC) on silicon FUZZ, drive voltage can be adjusted from 5 volts to 15 volts. That makes it easy to get that distinctive fuzz sound you get when your batteries are low. Also, if you increase the voltage, you can get a transparent fuzz tone.