My old pre-amp Sonic Frontiers Line-1 was excellent. Never had a problem with it. But my amp a Sonic Frontiers SFS-80 eat KT-88 like 2 set of 4 by year. That’s why I sold them 12 years ago and I bought my Bryston. I will never buy a tube amp but a tube pre-amp built by Bryston, that will be great for me.
Why some peoples prefer the sound of Bryston and others the sound of Krell or Cary or Naim or any others. Same thing for speakers. Focal, paradigm, magnepan, proac, etc.... seal boxes, OB, port.....
I listen to my system because it brings me pleasure. And also when I look at it I consider myself lucky to have it. Distortion???, they all distort at some point since they all sound different, no??

I think if someone prefer tubes over ss, good for him(here). Same thing for speakers, turntables, cables, etc...