No matter what your instrument, regain control of your tone with this incredible EQ. The MXR 10-Band Graphic EQ gives players huge amounts of tone shaping and level control in a bullet-proof enclosure. With ten carefully chosen frequencies and both input and output level controls, the 10-Band will let you tune your bass or guitar rig to any room in seconds; create earthshaking low-end; restore punch, level, and treble response to a crowded pedalboard; warm up an amplified acoustic; and much, much more. Power: Dunlop ECB004 18 volt AC Adapter