Denon AVR-591 5.1 Channel Home Theater Receiver with HDMI 1.4a (Black) (Discontinued by Manufacturer) 5.1-channel home theater receiver/amplifier with 375 watts of total power (5 x 75W) 3D-enabled HDMI pass-through technology (HDMI 1.4a); all sources are up-converted to HDMI High-definition audio support--Dolby TruHD, DTS-HD Master Audio, and Dolby Pro Logic IIz for front height effects channels Audyssey MultEQ dynamic room acoustic correction system with included microphone Measures 17-3/32 x 6-47/64 x 15 inches (WxHxD); weighs 20 pounds, 4.5 ounces