This is my first post here on Head-Fi. I have been lurking for a couple years but finally joined so that I might share my experience with the DN1000.
These are by far my favorite IEM's. I own the RE272 which are nice but too polite for hard rock and bass-heavy music. I tried several other IEM's before settling on the DN1000's. The Velodyne V-Pulse was too un-refined and had some nasty peaks in the mids. I had a pair of Xears TD2's that sounded decent but lacked micro-detail and bass control. I recently purchased the Yamaha EPH-100's and I really wanted to like them. They sounded very good except for a nasty peak in the upper midrange that accentuated sibilance in recordings and caused a metallic ringing that I couldn't live with. I have a pair of Brainwavz M2's which are good for the money but have a small sound stage and lack air. I tried the JVC FXT90's which I again wanted to like very much, but they had too much sibilance.
This lead me to take a chance on the DN1000's and I am extremely glad I took the plunge! I have never owned any balanced armature IEM's and love the bass from good dynamic drivers, so I was not sure what to expect, but these hybrids are wonderful! These have powerful, fast, deep, controlled bass, smooth, detailed mids that are neither boosted or recessed and very nice smooth treble with good extension. These have a large sound stage and good instrument separation.The bass tightened up slightly after about 40hrs of burn in and has just the right blend of speed, accuracy and natural decay. The mids and highs are so smooth with no nasty peaks or valleys. I settled on the silver spacer rings and the medium gray silicone tips. These have very good isolation, better than any other IEM I have tried. I find these to be very comfortable and well built with a reassuring heft that makes them feel like a quality product. I am using FLAC's exclusively in my trusty RockBoxed Sansa Clip Zip.
Now, it just might be time to step up to a better DAP, as soon as my wife forgets about the $200 I just spent.... I hope this helps someone else find their new favorite IEM's! Nice job DUNU!