looking for amp for thiel 2.4 speakers.

I agree with lunmanho. The Classe CA 300 is a great amp and probably one of the best matches for Thiel speakers you will find. And now you only want to spend $1500-2000? You should know by now you absolutely cannot skimp on amplification if you're going to own THIEL speakers.
My recommendation is buy back your Classe.

I have 2.4's with a Cary V12I and SLP98 pre. What I will say is that it is a match made in heaven. I do not play at screeming volumes but if you want to hear the most accurate sound and if you love vocals give this a try. I know many will say they love power and I am sure they do if you want your ears to bleed, but with the Cary in the 50w SET mode you'll be listening to 3-d vocals and think your room doubled in size. I had 300 watts of BAT product prior to the Cary and if you enjoy the sound of LIVE music and know what a soundstage is then hold on and have fun. I just hope you have the time to rediscover your music.

I heard the Stratos Extreme Oddyssey on Thiel CS6,
The most musical combination, Ive heard period.
Plinius might work, but the Stratos just unmatchable.
The X250 is not even close, in term of matching,
we both heard Stratos and X250 side by side.Email
Gabi, He is the one who own the Thiel,And He own
the X250, He sold the X250.Hope this Help.The Stratos
were not even broken in that time.

Not much to add to DavidRow's comments above that emphasize the best high current amplification you can afford. ...You own Thiels buddy, give them the respect they deserve. Pay up for good amplification! You wouldn't train for the Olympics by eating fast food would you? Pardon the metaphor, but Thiels need a high protein diet!