The Yamaha unit is a bargain because it includes a basic preamp to switch video signals and it also has built in amps. Therefore no external amp or processor is necessary, and you get a lot of bang for the buck.
Installation is fairly straightforward, and its functionality is adequate for a basic system.
If the room is setup well for it, you have a front wall and somewhat equidistant sidewalls, its processor is fantastic. Its effects will make you swear there are side surround speakers. This is a whole level beyond the 3-speakers-in-a-long-bar type of things others offer.
You'll need a subwoofer with it. Bass is minimal.
If your room is not setup like I described, the effects can suffer... but its still not bad. Just not nearly as good.
There is a digital issue they suffer from in that sometimes with Motorola cableboxes that will emit a digital noise that sounds like a "squeak" on certain selection of menu items. But its a quick thing and it goes away. There is just this compatibility issue I know of.
Overall I recommend the unit, its a good solution. Another great solution if you are more of an audiophile are Artison speakers that mount directly to the sides of the plasma and match its size and color... These are the best I have used to date... and I have used almost everything. They are phenomenol in sonic quality.
here is a link:
http://www.artisonusa.com/documents/Masterpiece.pdf
PM me if you have more questions.
