From MXR:

“The Bass Octave Deluxe offers two independent analog sub-octave voices with a Dry control and a Mid+ switch to optimize the sound of your parallel clean signal.

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).”

Brand new with box.