BEHRINGER UO300 ULTRA OCTAVER

FEATURES
Add two additional tones using your guitar–1 and 2 octaves below the original tone
Dedicated volume controls for all three tones
Flexible 3-mode Range switch allows ultimate bass performance
Status LED for effect on/off and battery check
Runs on 9V battery or the Behringer PSU-SB DC power supply (not included)
First-class electronic on/off switch for highest signal integrity in bypass mode
High-quality components and rugged construction