Hi Lord Fluff

Welcome to the forum. The later processors (568 and 568.2) have 30ms correction, and you can set an audio delay in numbers of frames via software when setting up the machine. You still then have 30ms to play with in addition to that via the front panel. I'd have thought that the combination should get the level of correction you need. You'd be as well to check the 565 manual to verify that this feature was available as it is of course an earlier model.

http://www.Meridian-audio.com/handbooks/565user.pdf

Cheers

George

PS Manuals are available to download on the Meridian site for pretty much the full range of 500 series kit.