What to power Thiel 2.4 speakers?

I'm driving mine w/ pass X250 amp w/ pass x2 preamp, i can tell you the 2.4's are alot easier to drive than the 2.3's. I demo'ed the 2.3 in my home before i decided on the 2.4's. the meter on the front of the x250 doesn't get anywhere near the level it did with the 2.3's at similar volume levels. the 2.4's are still breaking-in but i very impressed with these speakers. i agree with everyone above, high quality, high powered SS.

I used to own the 2.3's. I first drove them with a Sonic Frontiers Power-1 (55W tube amp) and then a McIntosh MA 6900 (200W Solid State integrated). Both sounded excellent. Different, but excellent. Always take quality over quantity. As much quality as you can afford. Enjoy.......

I'll be the contrarian here. I drove the 2.3s with a 120 watt Electrocompaniet solid state amp and traded up a month later to an 80 watt Air Tight ATM2 tube amp. Both sounded very good, but different. I preferred the ATM2 hands down -lived with it for 3 years.

Got plenty of volume out of the 2.3s in a 5000 c.f. room with a mere 80 watts. I must qualify that my listening tastes are 80% "classic" jazz from the 50's and 60's at volumes seldom exceeding 90 dB.

Can't comment on reproduction of current pop/rock recordings, but the Steely Dan and Little Feat tunes sounded great too. Good luck!

A robust , solid state power amp is the best option.