Onkyo TX-NR905 is a high-definition-capable receiver weighing 54 lbs and measuring 17 1/8" x 7 5/8" x 18 1/16"(435 x 194 x 458.5 mm). The TX-NR905 providers high-definition video and audio processing for four source components. The TX-NR905 can upscale any type of video signals to 1080i, regardless of the connection (for output via HDMI). This AV receiver is  XM and Sirius Satellite Radio ready.   Onkyo TX-NR905 providers users special features such as Massive Toraoidal transformer plus 2 separate transformers for Audio & Video Processing, built-in HD radio and network capability for audio streaming, and USB front input. Onkyo TX-NR905 uses various technologies and components such as THX Surround EX Ultra 2, DTS-HD Audio, HQV Reon-VX Chip for High-Performance Video Processing, Noise Shaped Video processing, WRAT wide range amp technology and VLSC vector linear shaping circuitry for improving sound quality.

Other special features include HDMI 1080i up-scaling HQV Reon-VX Chip for High-Performance Video Processing and Audyssey 2EQ for Loudness Correction. The Audyssey’s room correction technology helps to maintain the surround sound audio quality at low volume levels. The technology RIHD (Remote Interactive over HDMI) developed by Onkyo provides users the power of inter-operability with displays and playback components from various leading brands. Onkyo TX-NR905 also comes with THX Ultra2 Certification which means that the AV Receiver can easily handle the requirements of a home theater where the viewing distance from screen to seat is greater than 12 feet and the room volume is greater than 3000 cubic feet.   Onkyo TX-NR905 AV receiver  is equipped with 7.1 multichannel inputs. This AV receiver is also provides users  Dolby TrueHD, DTS-HD Master Audio decoding and automatic speaker calibration. DTS-HD Audio delivers sound quality that matches the clear and vivid images of high-definition video and Dolby TrueHD delivers sound that is bit-for-bit identical to the studio master. The Onkyo TX-NR905 is capable of switching between as many as six high-definition video sources. The improved remote is built around the concept of navigating via onscreen menus.   Onkyo TX-NR905 has tuner frequency range of FM(87.5 MHz–107.9 MHz), AM(530 kHz–1,710 kHz) and FM/AM Preset Memory(for 40 stations).