This may not be of much help, but I have a Sony 50A2000 and just recently hooked up an HDMI equipped Xbox 360 HDMI-HDMI direct to the TV and 1080P is going through (verified by the TV displaying the incoming signal). Previously I was using a non-hdmi 360 hooked up 720P component through the 990.

I believe the A2000 is quite similar to the A3000.

I'd recommend, like some of the posters above, that you connect directly to the TV. You can still run Optical to the 990.

Has anyone confirmed that 1080P can go through the 990 no problem?

I will be hooking up a PS3 soon...will report back the results.

Cheers.