It's one of the best I have heard, topped only by Unique Melody Mason and Mentor, which trumped even the mighty Roxanne. Now I wonder how the K10 and the 1plus2 compare.
I have a 1p2 for some months (like them a lot, especially from my X5 + Cayin C5 stack) and I'm interested in a K10(U) also for some time. So, last week I asked a fellow headfi-er (from who I knew he had owned/heard them both) about the differences. This was his reply:
Noble K10U is not a massive upgrade over the 1P2 IMO - but it does have a much more full less transparent sound, it's a little coloured but that adds to the richness if you like that type of thing.
I previously had the K10U but sold it as the Unique Melody Mason was better to me when I A/B tested them. I then felt I didnt give the K10U enough eartime so picked it up again.
As you can see he also mentioned the Mason and although the K10 is still on my wishlist, the Oriolus for ''only'' $800 has joined it on that (not so long) list...