Behringer BO100 Blues Overdrive Offers you the warm sound known from classic tube amps to capture every nuance of your playing Dedicated Level, Tone and Gain controls for awesome sound shaping Get the tone of a vintage and bluesy tube amp in an effects pedalanything from warm overdriven sounds to full-blast distortion Runs on 9 V battery or the BEHRINGER PSU-SB DC power supply (not included) Designed for use with: Guitar/Bass/Keyboard