Summary: I was excited when I bought it a few years ago. I have to admit I didn't know much about HDMI cables but I wish I did. It has no audio via HDMI which in my mind is the second most important thing, picture quality being #1. I was so mad when I finally found out that it didn't provide HDMI sound. I guess from now on I will research, (thanks to the internet and other consumers) before I buy any electronics again.
Summary: The unit is too complicated to operate and the differant sound output settings do not apperar to make that much differants in listing quility. I am useing it with a 42" LCD and can not find the setting that gives me surrond sound involving the rear speakers. I am useing the 7 speaker system. Volume seems low at highest setting. Not too low, but I feel it should be blasting to require me to turn it back. Maybe it is me because the instruction manual is so complicated.
Summary: I was torn between the Onkyo TX-SR506 and Sony STRDG720, which both have very comparable feature sets (7.1, 3->1 HDMI switch, optical inputs, component pass through) and are in the same price range. Even though I prefer Sony and have several Sony components (TV, PS3, etc), the Amazon sale price and some good brand recommendations tipped me to the Onkyo -- ordered it Friday, and had it on Monday!
Summary: The receiver seemed fine, but I didn't realize until opening the box that it cannot handle audio over the HDMI interface; it's video only with a separate audio connection (I needed both so returned the unit).
Summary: Setup was easy, sound is good, but the lack of HDMI audio is COMPLETELY LAME. How can you put HDMI in huge letters on the front of an audio receiver, and not play audio from HDMI? Yes, I saw "play through" in the product description, but contrary to other reports it DOES NOT say "play-through only", it just says "play through," which in my mind was a plus.
Summary: Just hooked it up and apparently this piece will not play audio through HDMI. It has pass-through and can only be played through the TV. Whats the point? I'm sure the rest of it is satisfactory but I could have kept my old non-HDMI.