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,
DaveK.
My System:
Power: Belkin PF40, Custom.hifi.cables Hydra and DC PSUs.
Sources: Self built HTPC with Xonar ST sound card, NAD T585 multi disc player, Sony BDP-S350, Squeezebox Touch, Techncs SL1210 (mod'd) + Nagaoka MP30, Thomson Sky HD box.
Amps etc.: 2 x Mini-T amps, MF-X10D Valve buffer clone, StanDAC 7520/Caiman (mod'd).
Speakers: Mission 774s with added super tweeters
Cables: best I can afford and likely to change except Homar's RF attenuated co-ax's and Mark Grant USB and HDMI cables. I also like silver i/cs and speaker cable.