Two channel USB audio/midi interface. 2 XLR mic inputs with selectable phantom power, 2 balanced 1/4" inputs with guitar level switching, midi in and out, balanced 1/4" main outputs with level control, headphone out with independent level control. Comes with USB cable which supplies power and allows data transfer with any MAC or PC computer. Works great with Garage Band or equivalent programs. Like new, only used a few times. $50 Reply via email.