Some of us hear run-in and some don't - hang-in there as it does get a lot better after a few weeks. It took mine about 4 weeks to lose the annoying run-in stuff and have all the sumptuous new capabilities and some, like me, find it hard until it gets farther along to describe it all as immediately glowing-good!
Fortunately it is not my first experience with NAP500 run-in and it was nothing outside of what happened before - a rough-ride until it all settled-down and I never would have dreamed of returning to my old NAP300 set I used before. Now I would not return to the non-DR NAP500 and it is still improving.
From week 4 or 5 until week 12 I thought I was essentially 'there' and had a fairly stable performance that was excellent and much better than before, so I was happy. However a few days ago it began to sound weird and was 'frighteningly clear' but with a rather 'etched' emphasis in the high-frequencies. Not unpleasant to listen to, but not right either - I considered re-booting the system, as that can clear things like this, but the effect reminded me of the SL Cable run-in sound and after another day the 'etched' effect cleared and I now have an amazing open sound-space at both high and low frequency ends - it just opened-out even more.
I'm still getting used to the new presentation - it reminds me of what happened to the SL Pre after about 9 months but here with the DR 500 the same happened on week 12-13.
You know what you hear Ken - and I'm interested to hear if you think things are a lot better by week 3-4. Then there is more to arrive later!