Description from Woodbrass : Audiophile 2x2 USB Audio Interface with XENYX Mic Preamplifier 2x2 USB audio interface for recording microphones and instruments Audiophile 48 kHz resolution for professional audio quality Compatible with popular recording software including Avid Pro Tools*, Ableton Live*, Steinberg Cubase*, etc. Streams 2 inputs / 2 outputs with ultra-low latency to your computer, supporting Mac OS X and Windows XP or higher State-of-the-art, 48 V-powered XENYX Mic Preamp comparable to stand-alone boutique preamps Powerful Phones output with Level control and Direct Monitor select Status, Signal and Clip indications for perfect overview USB port for connection and power Free audio recording, editing and podcasting software plus 150 instrument/effect plug-ins downloadable at behringer.com High-quality components and exceptionally rugged construction ensure long life Conceived and designed by BEHRINGER Germany