MOOER [Features] An octave pedal that accurately adds an octave down and an octave up to the input signal. It is a polyphonic specification that can be used with chords, allowing you to achieve unison with a bass or a wide sound like a 12-string guitar. [Specs] ■ Guitar Effects Pedal ■ Octaver ■ Controls: MODE, SUB, UPPER, DRY ■ True Bypass ■ Power: DC9V center negative ■ Dimensions, Weight: 42W x 52H x 93.5Dmm, 160g ■ An octave pedal that accurately adds an octave down and an octave up to the input signal. It is a polyphonic specification that can be used with chords, allowing you to achieve unison with a bass or a wide sound like a 12-string guitar. ■ You can adjust the output levels of the octave down, octave up, and original sound within a range of two octaves up and down, and assemble the balance to your liking. ■ You can select the combination of octaves to be added to the original sound from 11 modes and control the balance with each knob. [Condition] There are some dirt, scratches, peeling, and dents, but it works without any problems.