After listening for a week, I gotta say the imaging on these are just unreal, probably the best I've heard, better than the ex1000 that I also love. For instance on the song Gorecki by Lamb, there is a series of Djembe drums that goes from center to right then left, the position of each beat is slightly different, and with T800 I can discern the positions of each beat more clearly than most other headphones I have. The soundstage is very wide, but I feel it is a bit oval shaped, lacking a bit in depth comparing to the ex1000.
The bass impact and speed are also impressive, I agree with other reviewers that they almost sound like dynamic driver bass, especially the sub-bass, probably because of that vented woofer. The mids are lush and smooth, vocals are forward, I especially love listening to male vocals such as Eric Clapton on this. The treble is crisp and extends very well, and it is and not sibilant after a change to a copper cable. Another thing I really like is that these perform really well at low volumes, with no loss of detail or clarity, which is great because I tend to listen at lower volumes.
Although I got very small ears so finding the right fit that allows me to wear these for longer periods of time is a bit challenging, I made a custom earpiece which helped, and because of this, these isolate so well, maybe a bit too well....I can't even hear people talking to me from less than 1 meter away.