Yamaha XDA-QS5400RKBL, MusicCast Multi-Room Streaming Amplifier (4 Zone, 8 Channel)

XDA-QS5400RK MusicCast Multi-Room Streaming Amplifier (4 Zone, 8 Channel) Specially designed for custom integration of whole home audio systems, the "QS" (Quad Streamer) provides four zones of audio streaming and eight channels of high-performance audio amplification in an ultra-slim, 1U-high, rack-mountable enclosure. Expandable and extremely flexible, the QS works with the MusicCast multi-room audio system, allowing it to be linked with home theater AV receivers, sound bars and Hi-Fi gear in a wide variety of configurations. Designed for custom integration of a MusicCast multi-room audio system connected via Ethernet LAN in a rack or cabinet Streams four zones of audio per unit, expandable to 32 zones with simultaneous playback in linked groups of up to 20 zones each Eight channels of audiophile-grade Class D amplification assignable to any zone, bridgeable and 4-ohm capable, featuring a unique ground loop/hum-free circuit design Built-in Pandora®, Spotify Connect, SiriusXM Internet