The ART USB Mix is a 3-channel mic/instrument/line mixer and a computer interface. The bus-powered USB Mix not only gives you a great-sounding audio interface for your Mac or PC, but also a versatile mic/line mixer with an XLR/TRS combo input, plus another mix channel with stereo (or two mono) 1/4" line inputs. All of this is packed into a compact, robust steel case. With its affordable price tag, you can"t affordnot to have the ART USB Mix in your audio toolkit! The ART USB Mix is a solid choice if you"re just starting out with computer recording, as it gives you the functionality of a 3-channel mic/instrument/line mixer, as well as a computer interface. Everything"s packed into a tidy little steel case, so it won"t take up much space in your studio, on your desk, or in your backpack. The USB Mix is bus-powered, so you can just plug-and-play. You even get a separate level control for your headphones! This little device is seriously cool. If you"re in the market for an audio interface, check out the ART USB Mix. Features:USB powered - no external power supply needed when used with a computerMicrophone (balanced XLR) input or instrument (unbalanced 1/4" TS) input with switchable impedanceSwitchable low noise +48V phantom power for microphoneBalanced 1/4" TRS inputs for stereo or mono line-level sources1/4" TRS output jacks work with balanced or unbalanced linesStereo 1/4" TRS headphone jack with independent level control for output monitoringIndependent controls for both sets of inputs, main output, and headphone monitorGreen/Red LED signal/clip indicatorSwitchable assignment of USB playback to channels 2 and 3USB 2.0 compliantNo special drivers needed with most modern versions of Windows, Mac OS, and LinuxUSB cable, AC adapter, and Audacity recording software includedRugged steel case