Summary: The sound quality is quite good for the price. The remote is terribly messy. The interface overall is quite complicated. I'm never sure if I have the output set to decode the best quality audio or if I have some other synthetic mode turned on.
Summary: This receiver has a very poor user interface. One cannot rename the HDMI inputs, so GAME input remains GAME even if you have ROKU or other device hooked to it. The ability to add internet radio stations to the menu is very cumbersome, You need to set your Front speakers to small, otherwise your subwoofer will not work!
Summary: I received the VSX-823 and found that I needed to purchase a optical audio cable to get any sound from the TV, this receiver does not have all the A/V ports as the most other do. If you purchase this item make sure you purchase the optical cable to use with it. Im using the audio from the TV for now as the prices on the optical cables vary vastly in prices.
Summary: A good receiver but not outstanding. It was on sale and I think it is as good as any other receiver of the same price. However, it does have one annoying bug: it automatically switches from Stereo to to Dolby Surround Sound, depending upon the received audio on television. (Perhaps it does the same on all audio inputs but I only use it on television and to listen to Pandora.) I only have two speakers installed for stereo.
Summary: This receiver has a very large number of features. I particularly enjoyed the Internet radio feature, and playing music files from usb sources. The sound was very good. If the receiver had kept working, I would have rated it a 5. Unfortunately, the one I got developed a problem after a few days and had no output from the speaker terminals, although the headphone jack still worked fine. I returned the receiver and haven't chosen a replacement yet.
Summary: The receiver is good for the money one pays. If you want a higher quality receiver you probably need to pay almost double what this one sells for. A better investment is to make sure you have the highest quality speakers you can afford. Even a crappy receiver can sound good through high quality speakers.
Summary: The VSX-823-K has decent sound and sound features at it's price point. This is by no means a high-mid range receiver, but rather a solid mid range. The pass-through for HDMI can be change from the remote even with the receiver in standby, allowing you to use different devices without having to turn the unit on. I got mine on sale on Boxing Day, and am happy with it.