The BOSS OC-3 Super Octave gives guitarists high-quality octave effects with a single stomp. Three modes are provided, including a new Polyphonic Octave mode, a Drive mode with distortion, and the original OC-2 mode. The versatile OC-3 also has separate inputs for both guitar and bass. 1M-ohms Input Impedance 1k-ohms Output Impedance 10k-ohms or greater Recommended Load Impedance Controls - Pedal switch, DIRECT LEVEL knob, OCT1 LEVEL knob, CONTROL knob, and MODE knob Connectors - GUITAR IN jack, BASS IN jack, OUTPUT (MONO) jack, DIRECT OUT jack, and AC adaptor jack (DC 9 V) Power Supply - DC 9 V Dry battery (9 V type) and AC Adaptor Current Draw - 50 mA (DC 9 V) Dimensions - Width 2-7/8 x Depth 5-1/8 x Height 2-3/8 (73x129x59mm) Weight - 1 pounds (0.4 kg)