DESC: The AudioBox USB is a USB bus-powered interface with 2 mic/instrument preamps with 48V phantom power 2 balanced TRS outputs MIDI in/out and a playback mixer knob on the front panel allowing you to adjust the volume level between your recording and existing tracks. The AudioBox USB ships complete with the PreSonus Propak software suite including Cubase LE 4 as well as a bundle of third party plug-ins loops and drum samples.