Excellent review.  I have owned the T1 for almost a year now and whole-heartedly agree with everything you have said here.  They are a truly astounding headphone which seem to just keep getting better every time I put them on.  Originally they were paired with a HeadRoom Ultra Desktop Amp (solid state) until recently I migrated them to my WA7 tube amp and together they have stepped up their game a notch or two.  A good tube amp works very well with these headphones.

Great review!