Sony STR-DH540 5.2 Channel 4K AV Receiver 725 Watt Receiver (Black) (Discontinued by Manufacturer) iPod/iPhone playback via USB. Dolby TrueHD. 4K pass-through. HD Digital Cinema Sound. Pro logic IIz and dts HD Enhanced Audio Codecs. 725W (145W x 5 6 ohms 1kHz 0.5% THD)