MXR Bass Octive Deluxe

MXR M288 Bass Octave Deluxe: Dual-voice octave pedal Analog tone True bypass Dry mix knob Girth controls low-frequency octave-below tone Growl controls midrange octave-below control MId+ switch adds up to 15dB of mids (internally adjustable to 400Hz or 800Hz) Powered by 9V battery or power supply (not included)