Well I have now had 24 hours with the P25 and one thing jumps straight out- this is much more listenable.
High's, mid's, low's are all integrated much more than with the NAD's, giving a much nicer sound. (makes for better late night listening)
High's are much smoother now and less fatiguing on the ears,making extendid listening much better.
The biggest change I have noticed is that voices are now much clearer, standing out from the music but still part of it. I guess this is due to much more detail and a better defined soundstage.
Now for the down side, the Arcam does not punch as low or as hard as the NAD's (not a surprise going from 300wpc to 100wpc) but what it loses in power it makes up for with rhythem, timing, and speed.
Stereo system is....
TAG Mclaren CD20R VDH D-102 mk3
NAD T-175 HD A/V pre/pro VDH D-102 mk3
Arcam P25 VDH Teatrack
Monitor audio Silver 8i
Chris