M173 The Classic 108 Fuzz features the guts of our BC-108-loaded Fuzz Face® Distortion with modern MXR upgrades and a Buffer switch so that it plays well with wahs. 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).