The bass has a nice impact, but it doesn't have the slam that the DN-1000 has. Bassheads, this is probably not for you. the bass is actually quite neutral, with just a little more impact than neutral. It is much faster, and I think it is a little more detailed because the decay is shorter. This is a draw, but I like the DN-2000's bass better.
The midrange reminds me of the DN-1000, but it is not as recessed. The tonality is very similar, maybe with a little more upper mids. Vocals are clearer and they sound very much like the TWFK vocals (not sure if it actually uses the TWFK). Top marks in this area. The DN-2000 is the clear winner for me here.
The treble of the DN-1000 struck the perfect spot for me and the DN-2000 is a hair brighter. For me, this isn't particularly annoying, but I do wish the treble was tuned more like the DN-1000 and lowered just a bit. It is very detailed though, and treble is completely grain free. Draw.
Soundstage is wider and a little deeper. Height is about the same.
The imaging of the DN-2000 is clearly better than the DN-1000, which is already very good for its price.
The DN-2000's detail and separation really took me by surprise. This is by far the largest upgrade over the DN-1000. The DN-1000 has a lot of bass and it is definitely very enjoyable, but a lot of bass usually means less detail. The DN-2000's bass is toned down and there are more details and the separation seems better as well.
Overall, the DN-2000 is a solid upgrade from the DN-1000 if you find yourself wanting a little less bass and craving a more detailed, clear sound. Review will come in a few weeks.