I had just purchased a high end amplifier and then checked on these forums and found it did not have audio delay. When I phoned the hi-end hi-fi dealer they told me that audio delay would not resolve any lip-sync issues on my plasma. They have checked with Panasonic and a Sky engineer who has told them that the vision and sound are transmitted separately, and that the problem is caused by the video being in front of the sound. I would have accepted that the Sky+ box had issues when playing back and decrypting from the hard disk, but this has not been suggested. edit: The lip sync issue vary greatly from program/channel to channel on Sky. Some channels are ok. This is the first time that I have heard this theory, what does anyone else think. I believe that the dealer actually believes this to be true ! Thanks, Steve.