Agree completely with Muzikat. I love the Naim 5i with Totems, and it will sound different than your NAD.
But try these for "inner details":
Simaudio Moon i-1 or used Moon i-3
Primare I21 or used Primare A30
Anything you could find and afford from Blue Circle.
But try these for "inner details":
Simaudio Moon i-1 or used Moon i-3
Primare I21 or used Primare A30
Anything you could find and afford from Blue Circle.