Summary: For the benefit of other greybeards like myself who may still want to be able to play their old vinyl, I should like to add that of the STR-DG520, STR-DG720, STR-DG820 and STR-DG920, only the last-named has a phono input! UPDATE 2014 Five years down the road, mine is still performing well. There is one glitch, which manifested itself a few years ago: the display showing which speakers are in use shows speakers which are not if fact in use — for instance, subwoofer.
Summary: I bought this receiver to replace a 10 year old Sony Amp that finally went dead. For the money you can't beat the features and sound quality. Set-up is a breeze with the on screen GUI option. I immediatly programmed my Harmony One remote to work with this receiver. The remote that comes with this thing is big and bulky. My only other complaint is the volume response is slow. It takes awhile to turn up or down the volume. No real big deal.
Summary: The receiver came right away and worked good. Took a while to mess with the imputs to get all of my components integrated. If your components put out 1080i through HDMI do not use the HDMI input on the receiver because the HDMI signal will only pass through and not be up-converted. Use component cables and the receiver will up-convert the signal from 1080i to 1080p.
Summary: For the price the Sony STRDG920 is one of the best middle of the line A/V receivers on the market today. It meets most peoples needs and with its on screen display, installation and set up has never been easier.
Summary: I went ahead with the Sony DG920 because it offers upconversion on several of my components as well as running the audio output through the HDMI line. Unfortunately Sony has discontinued this model, it serves my purpose for my main A/V setup. Unless you are running multiple speaker setups, this receiver will fill your needs nicely. It's easy to use, once set up, and delivers clean,crisp sound for the price. As usual, Sony delivers quality.
Summary: My setup: I use my STR-DG920 with a custom built HTPC (home theater PC), Sony Bravia KDL-52W4100, xBox, Wii. My TV is wall mounted and my 5.1 speakers are all in-wall/in-ceiling. All A/V equipment is in a cabinet. I also use a Logitech Harmony 880 universal remote. My only issue: Excellent A/V receiver, great quality. There is only one issue I have not figured out yet, and am not sure whether the problem is with the receiver or HTPC.
Summary: Purchased the 920 and have it hooked to a Blu-ray player, a Sony 400 DVD/CD player, and an old VCR-DVD combo. Speakers are Bose. TV is a Sony. All hooked up via HDMI. Video and audio quality are excellent. The only thing I haven't got figured out is how to make it so the volume level is constant between different cable channels. Sure beats my old antenna CRT television...
Summary: I purchased the Sony 920 for three reasons. First, The unit has to ability to modify all input to 1080 I/P and includes three HDMI inputs. This positions me for any upgrades that I may purchase for a long period of time. Second, The reviews by previous purchasers were very good with the exception of the included instructions. Third, the price was exceptional on Amazon. I am still amazed at how they can price such a unit as they do.