Octave Pedal For Bass. Straight from Dr Greens surgery in conjunction with Ashdown Engineering comes the Octa Dose pedal. Expanding on from Ashdown's tried and tested sub harmonizer originally included in the ABM range of bass amplifiers, (which delivers an octave lower than the note played), the Dr has upped the flexibility with Direct and Octave controls making it easy to dial in anything from subtle thickening undertones to full on sub synth bass. This is a very flexible and fun pedal.The pedal also features true bypass switching and is housed in a custom designed steel casing that will stand up to being stomped on night after night. Pedal Controls: Direct - Control the amount of clean bass signal, Octave - Adjust the amount of low-octave signal. Power Requirement 9 v (centre pin negative power supply) H x W x D (mm) 61mm (Inc Knobs) x 67mm x 130mm (Inc Sockets) Weight (kg) 0.48