Amp recommendation to drive Thiel 3.6 speakers

https://www.stereophile.com/content/ps-audio-bhk-signature-300-monoblock-power-amplifier-measurements

Pym OP
I looked at a Gryphon Antileon Signature. I wish! Unless the photos have me wrong, what an ugly monster, the wife will run me out.

Most women I know like that 1910-1935 "Art Deco" look, especially the fashion of that time.

https://ibb.co/CQ84bxf

https://img.theculturetrip.com/768x432/wp-content/uploads/2016/11/usk-06620r1-e1479902480125.jpg

Cheers George

Like you, I have owned a pair of Thiel 3.6 since 1995. I traded a pair of Thiel 2 2 to get 3.6s from Soundings, Denver, Colorado . I have used several amps to drive these including PS Audio 200CX, Audio Research 100.2, and Krell KST 100.

Only after I got Mark Levinson 23.5,  Thiels came to life. Other amps were not bad, but 23.5 takes this to whole another level. So my recommendation is to track down a ML 23.5. Since you are used to tube sound, ML 23.5 will give a very similar presentation, but plenty of wham when needed. 

Rest of your system is top notched and should give you many hours of fun. I understand ML 23.5 is "old" technology and difficult to service if needed. But they mate very well with Theils unlike many other amps. If you have money, then you may as well track down a pair of ML mono blocks and that would be even better. 

pyma6 OP
Some reviews warn about a harsh tweeter

 Look what I posted about that above your post
And they all need doing now because of the age they are, instead of being viscose it turns to tar and causes linear distortion and heat, and if left too long, say good by to the tweeter one day.
Cheers George

If it doesnt have to be monos and tubes then get the SS CODA No. 8, Version 2.

250/500/1000 watts into 8/4/2 ohms, the 1st 12 watts pure Class A.

I have Version 1 with a tube pre driving B&W 804 D3s @ 87 db sensitivity LOUD without breaking a sweat. These speakers also dip to 2.8 ohms at a few points, which I can actually track watching the power meters flicker up at precisely those points.