The Behringer U-CONTROL UMA25S is a super-slim MIDI controller keyboard with a full-fledged USB audio interface. The U-CONTROL has 25 velocity-sensitive keys for slick glissandos and snappy arpeggios. This little monster also has 21 assignable controllers, including 8 knobs, 8 buttons (with transport-control option), 2 wheels, 1 fader, and 2 pedal ports, to give you total control. The Behringer UMA255 Keyboard includes energyXT2 Compact BEHRINGER Edition DAW software Audacity audio editor, comprehensive podcasting software, and over 100 virtual instruments, plus more than 50 effect plug-ins. Add to that a built-in USB interface, and you're ready to get to work straight out of the box. Separate MIDI output also allows controlling external samplers, synths, and other equipment Wanna jump on the stage and start jammin'? No problem. The Behringer UMA25S comes with a strap that allows you to shine on stage. Just strap it on and experience the limelight usually reserved for guitarists and singers. To get you totally mobile, Behringer includes a quality headset and soft bag with the U-CONTROL UMA255 MIDI Controller Keyboard.