The Pioneer VSX-523-K is a 400 Watt 5.1 Channel A/V Receiver featuring Made for iPhone Compatibility, HDMI with 3D and 4K Ultra HD pass through. Designed to provide high quality multi-channel surround sound and provide an entertainment hub for a wide variety of digital and analog audio and audio/video sources. Audio features include Dolby TrueHD/Dolby Pro Logic IIz/Dolby Digital Plus, DTS-HD Master Audio/DTS-ES/DTS Neo:6. Video features include HDMI 4 in/1 out, 3D Ready (Blu-ray Disc, Broadcast and Games). Additional features include iPod Digital Transmission via Front USB terminal and Charges iPod, iPhone.