I rarely post here but have been a regular reader for years and grateful this forum exists and so well managed.
Have just returned from a few days away, and listening to my fav music through the set up, feels like I am in aural heaven once again. The NDS with 555 dr has almost no noise floor, and manages to be refined and organic at the same time. 252/sc was slow to grow on me, but it amazes me with the finesse and musicality. And hats off to Naim engineers for the new amps - NC 250 has so much better grip and agility compared to the 250dr over the titans. British manufacturing at its best.