Performance, technology and affordability are the hallmarks of the AVR-591. A powerful 5 channel x 75W amplifier section delivers detail and dynamics to music and movie soundtracks. It’s equipped with HDMI 1.4a Repeating technology, compatible with 1080p (24fps) and 3D (all formats) allowing delivery of both audio and video to your HDTV with single HDMI cable. HDMI connectivity supports the latest generation surround sound formats available on Blu-ray disc, including Dolby TrueHD and DD+, dts-HD and dts-HR. Also included is Dolby Laboratories new Pro Logic IIz Matrix decoding featuring front height effects channels to dramatically increase the front soundstage for the ultimate surround sound experience. The AVR-591 boasts a number of Audyssey technologies. Advanced Audyssey MultEQ... Less

The AVR-391 sets new standards for performance and affordability, and is packed with great features that assures a superb surround sound experience. The 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. With 4 HDMI inputs, the AVR-391 can easily accommodate a wide variety of HD sources.