Behringer Digital Multi-FX FX600 Digital Stereo Multi-Effects Pedal Ultimate digital multi-effects pedal comparable to state-of-the-art studio processors 24-bit high-resolution stereo effects including Flanger, Chorus, Phaser, Delay, Tremolo and Pitch Shifter 2 additional parameter controls to adjust delay time, flanger rate, etc. Status LED for effect on/off and battery check Runs on 9 V battery or the BEHRINGER PSU-SB DC power supply (not included)