Equipped with three selectable types of noise reduction—Hiss, Mid, and Full—the Smart Gate Noise Gate bites down on sizzle and hum while still allowing your playing nuances through. 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).