Boss OC-5 Octave Floor Effects Unit, for electric guitar, OC-2 Vintage Mode, Octave Up & extended separation possibilities; input: electric guitar; controls for Direct Level, Octav Level (+1 Oct), Octav Level (-1 Oct) Range (-2 Oct); switches: vintage/poly; outputs Direct and Mono, dimensions in mm: (WxDxH) 73 x 129 x 59, power supply with a 9V battery or a 9V DC power supply (coaxial connection - negative pole inside, not included