For thrilling surround sound, the AVR-890 features the latest high resolution audio decoders, including Dolby TrueHD and DTS-HD Master Audio, and is among the first to incorporate Dolby Pro Logic IIz, which provides a dramatic expansion of the front soundstage by deriving additional front channel height effects. To ensure top audio fidelity, the AVR-890 features Audyssey MultEQ room acoustic measurement and correction which analyzes speaker system characteristics at up to six measurement points and the rooms acoustics, and instantly adjusts multiple parameters for optimum speaker/room matching (measurement microphone included). Audyssey Dynamic Volume prevents annoying volume jumps due to loud commercials between program breaks, and Audyssey Dynamic EQ ensures a rich, smooth tonal balance at any volume level. For optimum video quality, the AVR-890 features state-of-the-art video processing via Anchor Bay VRS ABT-2010, which provides analog to digital video upconversion as well as HDMI to HDMI upconversion, outputting at up to full 1080p HD (24p/60p). Multiple HD-compatible inputs include five HDMI inputs and two component inputs for maximum HD connectivity.