The Blue Box octave fuzz, adds fuzz to your signal and then duplicates it two octaves down. Control the mix of the fuzz signal with two octaves down fuzz signal.Video: https://youtu.be/Mzu3-9cg0j8Product SpecsItem Number: 39959Make: MXRModel: M103 Blue Box Octave FuzzCondition: Very GoodFinish: BlueCategories: effects-and-pedals fuzz pedalFunction: Distortion Pitch Shifter Year: Post-Y2KMade In: United StatesMPN: 39959Modular Grid: Pedals Dimensions*: 60 mm wide 111 mm highPower*: ? mA / ? V AC/DC* User contributed details