DB01B The most versatile wah in our line up, this pedal was designed for players who need options on stage, featuring an extended sweep range, a 6-way frequency selector, a switchable boost, LEDs to indicate wah and boost status, and more. 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).