The Yamaha RX-V663 (aka Yamaha HTR-6160) is a 7.2 channel a/v receiver supporting video upconversion and HD audio decoding. The ".2" portion of the surround sound designation refers to the two subwoofer channels as opposed to the more traditional single subwoofer; there are two mono bass outputs, one for the left speakers, and one for the right. Priced at $550, the RX-V663 is the cheapest model in the RX-V or HTR series of Yamaha receivers to support both video upconversion to HDMI and HD audio decoding of Dolby TrueHD and dts HD-MA. The RX-V663 can deliver 95 Watts of to each of its 7 channels, and features a second zone of audio. As for video inputs/outputs, it has 2 x HDMI 1.3a ins (1 out), 3 x component video (1 out), and 5 x S-Video/RCA input. It also features 3 x digital optical S/PDIF and 2 x digital optical audio inputs. The step-up RX-V863 model adds, most notably, video upscaling to 1080p and costs $450 more.
