Let the hive mind of Engadget get that for you.
"I need help! I want a small pocket camcorder but I'm not sure which one to get. I don't want to fall into the hype of the Flip because I worry two hours won't be enough. What should I be looking for when considering a small camcorder and where can I get a good quality one with expandable memory? Thanks!"
The Onkyo player internally deocdes DTS-HD:Master Audio, if I'm not mistaken, which the XA2 does not.
The real point of this Onkyo player is that it gives custom installers a trusted name (Onkyo/Integra) at a reasonably profitable price point to spec into their jobs. This item won't sell to the average consumer, rather, the boutique hi-fi crowd and custom specified and installed systems.