plays music from as many as six audio sources in up to six areas of your home at the same time built-in amplifier powers up to four pairs of speakers connects to a home network via Ethernet for easy A/V source and system control using your smartphone, tablet, or optional wall-mounted and hand-held interfaces easy-to-use iOS® and Android™ app lets you control the system, music sources, and optional home automation devices, including lighting and HVAC features access to streaming services like TuneIn, Pandora®, Tidal, Slacker™, Deezer and more two-way metadata capability for viewing album art, playlists, station information, etc. with compatible devices Auriel™ software wizard allows computer/tablet-based configuration for simplified system setup (7" or larger tablet recommended) supports IP-based lighting and climate control expandable up to 12 zones with additional MRC-6430 MRC-6430 controller/amplifier: 6 RCA stereo inputs for connecting source components 6 RCA stereo preamp outputs for Zones 1-6 (switchable fixed/variable) for connecting external amplifiers amplified and preamp outputs for Zones 1-4, preamp output only for Zones 5-6 4 sets of removable speaker terminals with four screw-down connections for speaker wire (up to 14 AWG) 30 watts RMS per channel x 8 into 8 ohms 45 watts RMS per channel x 8 into 4 ohms THD: less than 0.1% (1 watt output into 8 ohms) RJ-45 Ethernet port connects to home network router using CAT-5 or CAT-5e cable TCP/IP backbone for control with no proprietary wiring needed 6 routable IR outputs for external component control connection for optional Niles DBI-2 doorbell interface shelf- or rack-mountable design (rack mount ears included) 17-1/4"W x 3-1/2"H (4-15/16"H with feet attached) x 12-7/8"D Note: this unit recently received a major software upgrade. Learn more about Auriel 2.0's extensive feature set here.