Behringer Ultra Octaver Pedal.

Here's what Behringer have to say: It is widely known that there is great strength in numbers. The ULTRA OCTAVER UO300 underpins your sound with added muscle, generating notes one and two octaves below what you play. The result is powerful, with the deep, rich impact that is only possible when guitar and bass lines are joined at the hip. Wanna play bass lines with your guitar? Wanna play synth-like lines with the addition of some fuzz with your guitar or bass? The stunning UO300 will make your tonal dreams come to life. First, use the dedicated Range control to specify whether you want to add beef to the high, middle or low frequencies, then dial in the amount of your original sound with the Direct knob. Lastly, turn up the OCT 1 and OCT 2 controls to add the lower octaves. Now bask in the adoration of your fans. The UO300 isnt just great for fattening up guitar riffs it can add incredible beef to keyboards and bass, too! The status LED tells you when the UO300 stomp box is working its magic, and the on/off switch maintains superior signal integrity in bypass mode. You can power the UO300 with either a 9 V battery or our PSU-SB DC power supply (not included). Specification: Input Connector: 1/4'' TS Impedance: 500k Output Connector: 1/4'' TS Impedance: 1k Power Supply USA/Canada: 120V, 60Hz China/Korea: 220V, 50Hz UK/Australia: 240V, 50Hz Europe: 230V, 50Hz Japan: 100V, 50/60Hz Power Connector: 2 mm DC Jack, Negative Centre Battery: 9 V Type 6LR61 Power Consumption: 30 mA Weight: 0.33 kg Dimensions Height: 54 mm Width: 70 mm Depth: 123 mm