After 20 years, in the market for a power amp

Pass XA30.8 used within your price range. Warmer but less dynamic than the X250.8 that’s also in your price range used. 
Coda no.8 is another option. This amp is faster, more articulate than the Pass but still retains natural tone and is clear and relaxed sounding. 
SimAudio Moon 330A is on the lower end of the scale price wise but is very competitive. Slightly less warmth than the above mentioned amps but never harsh or bright. 
 

Another choice is a matching primaluna amp but that’s tubes. 

You can buy a brand a new Coda S5.5 in your budget, outstanding amp and will drive the T 1's with ease.  Contact Tom at Big Ear Stereo for a good price. I had T1.r's for while so i have experience with them.

I would do a home demo of the new Schitt Wotan amp at $1999. I want to sell my Sanders Magtech to get the Wotan mainly because I need a power standby switch, and the Wotan is likely sonically comparable to the Magtech.

Schiit Audio: Audio Products Made in USA

I have a Pass Labs XA25 pure class A and extremely happy with it. Very transparent with tad warm presence. Easy to match with different speakers. It is a reference amp for many audio reviewers. Likely the last component I would change. Coda may be one to explore. Tried the Moon 330, very good but timid. Also heard the Ayre vx 5 - twenty. Could be an excellent option if you can find a used one. Very refined and neutral IMHO.