Yamaha XDA-AMP5400RK Multi-Room Amplifier This Yamaha amplifier is specially designed for custom integration of whole home audio systems, the “AMP” serves as a companion amplifier for the Yamaha XDA-QS5400RK to expand speaker coverage and/or increase power output. It may also be used to expand secondary zone speaker coverage for Yamaha AV receivers that have Zone pre outs. Features Works together with Yamaha XDA-QS5400RK to expand speaker coverage in custom integrated multi-room audio systems Eight channels of audiophile-grade Class D amplification, bridgeable and 4-ohm capable, featuring a unique ground loop/hum-free circuit design Four audio buses and included jumpers allow for wide variety of speaker configurations Interlocks power on/off with XDA-QS5400RK via Trigger I/O Integration-friendly features include audio sensing inputs, IR I/O and more 1U high, rack-wide enclosure; removable rack ears and faceplate included The Perfect Whole Home Audio Companion Sonic Soul Mates The XDA-AMP5400RK – the “AMP” – was conceived as a companion to the Yamaha XDA-QS5400RK as a way to provide additional speaker coverage and/or additional speaker output power in a custom integrated multi-room home audio system. It also pairs nicely with Yamaha AV receivers that offer Zone pre outs. Slim Yet Powerful The AMP packs eight channels of audiophile-grade amplification into a remarkably-slim 1U-high enclosure, allowing you to fully optimise your valuable rack real estate. Phenomenal Flexibility Feed up to four sources from QS pre outs into the AMP – its four audio I/O buses can be patched together to handle a wide array of speaker/zone configurations. The AMP comes with a set of jumper plugs and cables, making it ultra-versatile right out of the box. The audio outs can alternatively be used to connect powered subwoofers or subwoofer amps. More Power on Demand Each of the four amplifier zones is also bridgeable, giving you the option to increase power output to select speakers if needed. Custom-Built for Custom Versatile Installation Mount it in a rack with the included ears or remove the ears for shelf installations. The included magnetic faceplate discourages tampering and provides the perfect cosmetic finish. Harmonious Control When a QS and AMP are