Solid state streaming audio receiver made by Barix in Switzerland. Can receive most audio codecs including AAC (some of the older models will not play AAC - this one will.) USB input on front accepts a USB stick that can include a playlist of songs that can play either as a backup to the Internet stream or as a default playback source. Built-in web server for programing. Have provisioned hundreds of these units for an in-store playback system with zero problems. Can also be programmed for radio station STL use at a low price. This unit is slightly used and may have a few small scratches but guaranteed to work 100%. Contact me with any questions or applications. Includes a IR remote and free shipping.