Those with 3D TV's will have found out by now that they rely far more on external Lip Sync than older 2D TV's. Older sources have worked with 2D TV's very well for many years using CEA-EDID Audio Delay. Unfortunately 3D TV's require HDMI 1.3 Lip Sync as the delays required are variable, not fixed as in CEA-EDID, or like a manual correction can offer. The X2 dosn't support HDMI 1.3 Lip Sync (it's not a mandatory part of HDMI 1.3), so one solution is to use a surround amp which does.
Can users report their successes, or failures, in getting Surround Amp Lip Sync with 3D TV's to work, as replies to this post.