Shape your sound and eliminate feedback with 7 bands of equalization This BEHRINGER product has been designed to compete head to head with leading products on the market Wide frequency range from 100 Hz to 6.4 kHz with a powerful 15 dB boost/cut per band Blue status LED for effect on/off and battery check Runs on 9 V 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 exceptionally rugged construction ensure long life