Ashdown SUB-OCTAVE-PLUS Bass Octave Effect Pedal By blending the sub-octave note with the original signal, bass players can move from a subtle reinforcement of the sound to truckloads of bone-crushing tone Distortion can be added to the sub-octave note, with the amount and tonal characteristics of the distortion both adjustable by the player The pedal is housed in a durable metal case and features an input level control with a trademark Ashdown VU meter to allow optimum signal matching from any instrument