Thiel Owners

They don't give any specs into 4 ohms - 

  and it doesn't look like a high current amp.  So I would guess unless you don't listen to dynamic music in a small room, I'm not sure you would be happy with it - 

btw - accessories4less.com sells authorized refurbs and it is $300 cheaper than Amazon.  It apparently has an impedance switch for speakers between 4 and 6 ohms which hints at the fact that it is not considered ideal for lower impedance speakers.Stereophile measured the minimum inpedance at 2.73 ohms at 600Hz and "stays significantly below 4 ohms from 100Hz to 50kHz, and there is a difficult combination of 4.5 ohms magnitude and –45° electrical phase angle at 80Hz. Thiel CS2.4 owners should make sure they have a good 4 ohm–rated amplifier to drive this speaker."

If you can stretch the budget a drop, there's a lightly used Peachtree Audio nova300 integrated on Audiogon that is listed as 2 months old in mint condition for $1,250.  If you can get a few bucks off, it is rated at 300W into 8 ohms and 450W into 4. The built in DAC can do double DSD and 2384kHz PCM.  There's reviews out there such as:

That's definitely food for thought, thank you. It looks like that Nova 300 can power anything. Those are great deals on the refurbs, thanks!

@bobscliff, the CS 2.4's impedance drops to below 3 Ohms. You're not likely to find many amps spec'd to the 2.4's specific minimum impedance. One might find some amps spec'd to 2 Ohms. If you want to get what that the 2.4's are capable of you'll want an amp spec'd to a minimum of 400 Watts into 2 Ohms. If the amp is not specifically spec'd into 2 Ohms, it 's not very likely that it's capable at that load. Being "stable" into a load only means that the amp won't go into oscillation into that load. It is not a guarantee of performance.