I've put around 6 or 7 hours on these so far.
They're much, much better than when I last heard them.
-the treble isn't as tipped up as I remember (still on jazz that extends really high, it gets a little fatiguing)
-bass extension is not very good (audible at 30 Hz, very good down to 40 Hz)
-HF extension is good (~18 Khz)
-bass impact is an enigma. On certain albums it has a lot, other times you just hear the bass and it's not remotely palpable
-some funkiness going on in the midrange, almost like the upper midrange is slightly recessed
-soundstage can't figure this one out...the headstage is pretty small. But the drivers are angled towards your ears...
-imaging is not bad, but a bit fuzzy
-very enjoyable with large symphony music
-average PRaT
-they do particularly well with live rock music. The fishbowl soundstage makes them sound like a concert
-layering of instruments is cool
So the CD3000s biggest offense? Tone and timbre, it's not that great (reminds me of the SA5000 I had on loan). Tried with piano, violins and sitar. As an example when listening to some violin tracks there's nothing accurate about it. Undoubtedly you're hearing a violin, but that's it. With the HP-2 or K1000 I can listen to a strad and say "that's a damn fine violin" with the CD3000 not so much.