Local bar, Decibel ( https://www.decibel-pdx.com/), here in Portland runs the JJ322 and JJ243. He has WELL over 10000 hours on them in 2.5 years and only recently had to replace one small cap.
He used to run Klipsch, but now runs a custom horn loaded Altec Setup.
https://www.jj-electronic.com/en/hi-end-amplifiers
https://www.eurotubes.com/store/pc/jj high end hi-fi amps.htm
https://www.eurotubes.com/store/pc/viewCategories.asp?idCategory=768
They are robust amps and sound amazing in his system.
Eurotubes can import them from JJ for you, get them setup and then send them on. I know the owner of Eurotubes, so if you want an intro let me know.