The AVR-391 sets new standards for performance and affordability, and is packed with great features that assures a superb surround sound experience. The latest audio decoders, including Dolby TrueHD and DTS-HD Master Audio are included, and there's even Dolby Pro Logic IIz, which for the first time provides front channel height effects, for a dramatically expanded front soundstage. It's also equipped with the latest HDMI 1.4a technology, which for the first time provides for 3D pass-through (Broadcast and Blu-ray) capability, delivering thrilling 3D high definition viewing with 3D-compatible HDTVs. With 4 HDMI inputs, the AVR-391 can easily accommodate a wide variety of HD sources, including cable or satellite set-top box, HD game console, Blu-ray disc player, even an HD camcorder. The remote features discrete input selector buttons for quick source selection and includes dedicated buttons for iPod control with an optional Denon iPod dock.