Summary: Returned it. The only wireless is between the front module and the back one. The rest is the same as a traditional set up. In fact, with a traditional set up there is just the wires which are much easier to hide than the large receiving module.
Summary: After paying more than $1000 for this item at Best Buy and investing another $200 for another remote speaker from Amazon, the main unit started showing "Press Power Protector" just a few months and about ten uses after purchase. There is no Power Protector button to press and all of Sony's online suggestions did not work. I can't seem to find anyone who is able to fix what seems like a minor problem so now I have a useless bunch of junk.
Summary: Despite the comments from many other users regarding the inability to use the rear speakers, I figured I'd give this product a chance. Unfortunately, I ran into the same problem and after 3 hours trying to pair the rear speakers decided to call Sony. They are sending me the signal booster cable. I will update this review when I get it. It amazes me that this product can get 4 stars from reviewers who can't use their wireless rear speakers.
Summary: I have been buying Sony products for 40 years and this is my first disappointment, although it may turn out OK. I bought this system because the DVD player seemed to rate very highly (one glitch with Warner Brothers DVDs noted in another review but that is all), when compared to other models and brands, including less expensive ones from Sony, and the extra cost for the speakers seemed to make sense.
Summary: We already own a Sony 52" plasma and was ready to step up to blu-ray and 5.1 channels. Setup was not a problem and the sound was reasonable. The wireless rear channel receiver quit working after a week. After resetting the system several times, I find out the instructions were incomplete on how to re-connect the S-Air wireless signal. Best Buy wanted to send the Geek Squad over for $150 and Sony wanted me to ship the unit back complete at my cost.