I received my dn2000 today and I am very pleased with packaging and accessories. I am using the already-attached silicon tips and rings, fit is good, playing through audio-gd sparrow with wm8741.
One thing I noticed about trying new gear, or gear I have but don't use them for a long time, is that their unique characteristics can be very apparent before our ears acclimate to them, so I am going to write down my initial impressions after several hours of testing, even though naturally more burn-in time, longer listening, and better thought out observations may make me reconsider some of my initial observations and to make new observations.
DN2000 might be very revealing. I was watching Star Trek: Voyager, Blink of an Eye, and the village leader was talking with an old man, and I could clearly hear the congested sound-booth sound in that scene which I never noticed before on my other headphones. I then tried some songs with different soundstages and it seemed like I could tell them very easily, and with Dido, No Angel album, Take my hand song, the ambiance and soundstage felt almost as big as with my sa5000 headphones, very impressive. Some songs sound intimate, other songs sound remote, I haven't figured out exactly why, but I have been getting a hunch that it is just this IEM being very revealing of recording quality.
Bass has a bit more oomph than neutral, mids neutral, and highs are rolled off on cymbals and sibilance, but overall, I'd still have to say its quite neutral, and definitely more neutral than my other headphones. Bass feels tight, controlled, pleasant, not overpowering and not omnipresent. Mids have beautiful and effortless articulation, but maybe not particularly good texture, not sure though, might just be revealing my sparrow's texture (which I know isn't particularly good) and I would rather test on better gear before deciding on texture. Highs are alright, detailed, pleasing, and a bit rolled off, but personally I like sibilance, cymbals, and other high frequency sounds.
Other than its ability to show different soundstage sizes, the dn2000 didn't really blow my mind in any other one way, but it does seem to have a pleasant sound (even for a neutrality fan), effortlessness, and a number of other good qualities that, when added together, make me quite satisfied with them. I think they are maybe a few steps up from the tf10.
Will test for a few more weeks and using my other gear before giving more impressions.