"Think of SpeakerLinX as the intelligent room controller/amplifier. The SpeakerLinX SL220 is a 2 x 20 Watt IP-Based amplifier with unmatched intelligence for high quality distribution and control. Small and powerful, the SL220 not only acts as the amplifier in your new system, it also serves as your network controller with an integrated web server. Burr Brown® D/A converters insure the highest audio quality. Decodes and plays uncompressed (WAV) as well as MP3 files."