The OP says when he takes it up to 93-93db, the sound gets a little thin. That’s odd because those speakers have a sensitivity of 91 db, so at 95 are drawing around 3-4 watts, depending on size of room and distance from speakers.
Exactly the problem. This sounds much more like driver compression than amp issues.
I could not find linearity (i.e. compression) measurements for the T2, but the T and T3+ are posted, and they are particularly bad in the treble region.
http://www.soundstagenetwork.com/index.php?option=com_content&view=article&id=1589:nrc-measu...
Apparently not everyone is as sensitive to this problem as I am, and I am very very sensitive to it. :)
Best,
E