Check the listing for details. 4 Zone App Control Matrix Multi Room Amplifier 80W/Zone, iOS and Android. Condition: Open box. Listed at 529.98 USD. The NERO MAX8 is a highly efficient Class D multi-channel audio distribution system that powers up to four zones with up to six different sources for well-rounded and easy-to-manage residential and commercial audio systems. This multi-functional and highly compatible and expandable amplifier is engineered with cutting-edge features including full control from iOS and Android devices. The free App duplicates the optional control keypads and allows you to select zones, adjust volume, treble and bass, or turn all zones on or off directly through a smartphone or tablet. Designed with A/V integrators and homeowners who want the most flexibility, the NERO MAX8 includes numerous input sources including four stereo line-level RCA, one 3.5mm aux, and one optical/3.5mm combo analog source input. In addition, RS232 and ethernet ports allow transferring and receiving the serial data between home automation systems. The NERO MAX8 features four zones of reliable amplification at 40W per zone at 8ohms or 80W x 2 @ 4 ohms and includes stereo/bridge mono output for combining zones (120W @ 8 ohms). The Nero Max8 can power four separate stereo zones or rooms, and when coupled with our in-ceiling, in-wall, or outdoor speakers, deliver genuinely great sound. With complete systems selling from around $1,200 you can now have an architectural system for the same price as four smart speakers. Control is via a free App and sources can be anything from an old CD player to an Echo dot. Any of the six sources can be played in any of the rooms, or all of them. Specifications: Power: 8 Ohm - 40W x 2 per zone 4 Ohm - 80W x 2 per zoneBridgeable: 8 Ohm Only - 80WS/N: 85dB A WTDTHD: 47 K OhmOutput Impedance (line level) 100 OhmsInput Sensitivity: 250mvProtection: Overload, Short Circuit, TemperatureSystem Voltage: DC +12VExternal Mute and TRIGGER OUT Voltage: DC +12VNetwork Connector: RJ45, Standard 10/100MbPower Supply: AC 115V/60Hz - 230V/50Hz (CONTROL12 DC 15V/1.6A)Output Connection: Terminal BlockDimensions: 16.9” W x 3.5” H x 16.4” D Weight: 19lbs