Yamaha YHT-897 5.1-Channel Network Home Theater System (Discontinued by Manufacturer) 5-channel powerful surround sound (100W per Channel) with HD Audio format decoding: Dolby TrueHD and DTS-HD Master Audio; Dolby Digital Plus and DTS-HD High Resolution Audio AV controller app for operating various functions from an iPod/iPhone/iPad or Android phones AirPlay allows music streaming from Mac, PC, iPod, iPhone, iPad 4K pass-through for next generation super high resolution images Front panel USB Digital Connection for iPod and iPhone, plus YPAO sound optimization for automatic speaker setup