The Bad Stain Octave is a small, compact and durable pedal that is a vital piece of equipment that should be in every musicians arsenal. The Octave produces tones that are an octave higher or lower to help compliment your playing, making your single guitar sound like two guitars, or even multiple guitars. Adjusting the knob in the far left corner introduces a second guitar tone that is an octave lower than the note currently being played. Adjust the knob on the upper right to produce an octave another step lower. The knob on the bottom right generates a guitar tone that is an octave higher than the note currently played, allowing the player to mimic the sound of a second guitarist playing higher notes. The knob located on the bottom left controls the tone, of the output signal, allowing the user to increase or decrease the brightness of the tone. The Octave features a sliced 9mm bullet shell located around the power indicator light, giving the pedal Bad Stain’s signature style. The Octave is powered using a 9 volt power adapter (Sold Separately).