Detailed, with emphasis on vocals (midrange), and non fatiguing?
Sounds like ATH-W5000, I don't think modding T1 can bring them even remotely close but it might make them listenable (waiting for ordered felt to prove that).
W5000 are about on par with HD800 but not as analytical and have quite colored (some call it sweet, some honky) midrange, T1 is ... well I should look way down to see where it is comparing to these two, there is something Ultrasonish with the way they sound.
HD650 is good too, but not as detailed as others but sweet nonetheless and have more universally accepted as *right* timbre, they are on a dark side though, more in line with LCD-2, in fact sound remarkably like one.
Edited by Andrew_WOT - 4/28/13 at 8:53pm