For what it's worth, the same unforgiving characteristics also apply to the Tirna-ised 7520. I have a Tony Bennett/KD Lang CD ripped to FLAC on PC which I have played many times before through standard 7520 without problem. Last night one track came up (on random playback) with continual slight but audible 'white noise' all through the track. Next track was fine so replayed the problem track and there it was again - very revealing, perhaps in more sense than one.
Cheers,