Thiels and Tubes

I own a pair of 2.3's. The only tubes I auditioned them with was AR-200's. ok sounding.

I like my 2.3's w/pass labs x-150 and x-2 preamp. Nice tube like sound w/no tubes.

Check em out

I currently have the CS2.4.  I also have a pair of Cary Six Pacs monoblocks, and I tried them with the CS2.4 but they couldn't have the current to drive the Thiel.  There was just no dynamic.  I would think you need a rather high power tube amps to probably drive the Thiel given their low impedance.

If you want tubes w/Thiel go w/a tube preamp and SS amps. I had a pair of 2.3's w/two modified Threshold T50 amps and an Audio Research SP-16. Very nice sound. Removed some of the harshness at the top but it still had plenty of detail.

As someone who owned a high end audio salon years ago, I sold, and owned 3.6’s.  Luxmancl38 is correct - A Tube Preamp with Solid State power is a great way to go!  However, we did sell VTL or Audio Research Tube Amps to run them as well.  The amp power was chosen based on how loud a person liked to listen, and of course budget...
Good luck!