The Sub Octave Bass Fuzz combines two different fuzzes with a growling sub octave signal, featuring an array of controls to fine-tune your sound, including a separate Dry volume control to ensure clean low end retention. 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).