The headphone has a bizarre, rare collection of traits. It's moderately warm, but insanely revealing. I A-B this against an LCD-X and will make my mind up soon. I listened to the Deftones Saturday night Wrist, and in Pink Cellphone I could hear a door closing 3x, under the woman speaking. Frikking amazing. There is a small hotspot in the treble at about 18000, but it's minor and rarely becomes offensive. The bass is NOT bloated and sluggish, whoever feels that has heard it out of the wrong source or is on somthing IMO. There is "driller bass" on some tracks, but fortunately rare. I believe the mids are slightly recessed, NOT very. Strings are totally sublime on the TH-900 and male vocals which are alto or higher, or female vocals are stunning. It is a fast headphone imo. PRAT Pacing, rhythm, accuracy, timing. The only thing that was fatiguing is "listening" to the layers. Some WTH moments, where there is a scratchy noise in the mix that is there, and the engineer dosn't want it to be. It dosn't sound like resonance. This could not be more different than the D-7000, it's ridiculous, they are worlds apart, IMO. The D-7000 was too warm and wallowy, and in my face. It felt fatiguing the D-7000 before too long. The Naim V1 Dac fed from a Bryston 01 CD player sounds like a good combo to be.
also the D7000 was slower, felt congested in complex passages, and also (with lawton pads/mods, not sure about stock headphone) could get sibilant and bright at times.