That’s the 17th Anniversary model, a single DD IEM which is no longer being made. I’m told by a DUNU rep that a mass-produced model is in the works using essentially the same driver, different shell, and re-tuned.
Out very own @antdroid has reviewed a few existing models:
- DUNU Luna (DD)
- DUNU DK-3001 Pro (hybrid - single DD plus 3 BA)
- DUNU DK-2001 (hybrid - single DD plus 3 BA)
Crinacle has a review of both the DK-3001 Pro as well as the DK-4001: