Thiel 2.3 amplification

Bunkeromantik, I'm assuming you mean $3K for both pre and power amp or an integrated. Due to the impedance load presented by the Thiels, integrated choices will be limited. At that price point, I like the the big c-j solid state power amps with either a tube or solid state c-j pre (move up to something above a PV-10). I haven't heard them, but the Plinius stuff appears interesting. Think, smooth, neutral and gutsy.

i'm currently driving my 2.3s with plinius sa 100, CJ premier 17, and cary 303 - i find the tube pre amp and tube-like cary necessary to balance out the somewhat analytical thiels. i'm very happy with the SS amp / tube pre amp combo and listened to many amps in my search - found plinius to be the best match for my ears. people also like the classe with thiels, but in my opinion, the plinius does everything the classe does only better.

I have Thiel CS2.3's and used to drive them with Bryston 4B-ST and recently switched to Sim Audio Moon W-5. They sound fine with Bryston except if you want to listen listen at high spl's. They sound much better with the Moon W-5 with dynamics benfiting from the Moon's control and current plus the Moon has a touch of sweetness up top.

I recommend any amp that doubles down into 2 ohms (at least 700-800 wpc into 2 ohms) and has output impedence of 0.01-0.015 ohms.

If you can audition a Classe amp go for it.
Highly recommended. A CA 200 will IMHO pair really well.
If you can come across a Levinson 27.5 or a 331 for a decent price then i would go for them too. Classe will just give you more bang for the buck.

Thanx.
I really apriciate all inputs.