That might've been a common generalization of the older HD650s, but I had a newer pair with silver damping. It actually made the D2000 look quite dark in comparison. The Denons still had brighter treble, but in no way was the HD650's treble rolled off, and an upper mids recession on the D2000 made the HD650 quite upfront in its upper-mids in comparison. Supposedly HE-400 is darker than the HD650 with its planar magnetic bass extension, so it will probably sound very similar to the Denons.
Sadly I won't be able to directly compare the he-400 to the HD650, which would probably be an extremely sought after comparison for head-fi'ers, but I will compare he-400 to D2000 in a long post just like I did with D2000 vs HD650.
Sadly I won't be able to directly compare the he-400 to the HD650, which would probably be an extremely sought after comparison for head-fi'ers, but I will compare he-400 to D2000 in a long post just like I did with D2000 vs HD650.