Behringer Ultra Octaver UO300 3-Mode Octave Instrument Effects Pedal Create a monster sound by adding 2 additional tones using your guitar1 and 2 octaves below the original tone This BEHRINGER product has been designed to compete head to head with leading products on the market Dedicated volume controls for all 3 tones for awesome sound shaping Flexible 3-mode Range switch allows ultimate bass performance Status LED for effect on/off and battery check