Intregrated Amp for Thiel 2.4 s

I am getting a pair of Thiel 2.4s in a 15ft x 20 ft room. Any recommendations from owners? Thiel are rated 4 Ohms (minimim 3 ohms). Budget is flexible $1500-$4500. I like to spend less. I have a Rogue 90 amp, is it enough for CS2.4?

Krell 400xi (a little concern with JA's test in stereophile)

Bat 300xse
Musical fidelity A5, trivista or KW500
Unico SE (140W)
Pathos logos

I don't like ML 383 and Rowland concerto.

Classical, Chamber, Jazz, no rock.

Any input is appreciated. Thanks.