The Battalion Bass Preamp and DI is a compact, flexible pedal that delivers powerful tone shaping capabilities in a rugged pedalboard-friendly package. The Battalion is loaded with features that will appeal to tone conscious bass players and includes a four-band equalizer, fully-featured MOSFET distortion section with three signal path options, a compressor, a noise gate and comprehensive I/O. Powered by a 9v AC power supply (included).