A dual-voice octave pedal from MXR Bass Innovations that offers organic analogue tone, true bypass and a wide variety of tone-shaping options. Powered by a single 9 volt battery, MXR=s 18 volt Constant Headroom TechnologyJ (CHT) provides studio performance headroom and superior tracking. Use the dry knob to mix your direct bass signal with the octave effect, or hit the mid+ switch to add up to +15dB of internally adjustable low-mid punch (400Hz) or mid-range pop (800Hz). Bass players will love the two separately processed and individually voiced octave controls - >growl= (for throaty, mid-range octave-below tone) and >girth= (for deep and smooth octave-below). The Bass Octave Deluxe comes in a durable, lightweight aluminium casting and has the same high quality jacks and switches that have made MXR pedals the road-ready standard on pedal boards around the world for over 30 years. Optional AC adaptor (RPC921R).