The Blackstar Unity Bass U250 bass combo amplifier was built for tonal flexibility. Switch between three power amp stages via the U250's Response control to shape your compression, natural drive, and dynamics. Choose between three distinct preamp voicings, and then sculpt the result with a 3-band EQ. Increase your bass's punch, depth, and low end, with compression, chorus, and sub-octave effects. The U250 is loaded with enough connectivity for live, studio, and home use. And if you want to beef up your output onstage, you can add a Unity U250ACT powered cabinet for an extra 250 watts of power.