My Ref System is all TRL - including ST-225 - Solid State amp from TRL.
It is transparent, open, dynamic etc.
The only downside is - it is very heavy and would not win any beauty contest.
Paul, at TRL says that you can put this amp against any other amp in the world (including his super expensive super heavy tube amps that are still in production) - that is a bold claim coming from a modest person like Paul who does not like and actually does not do any marketing or advertising.
If you can afford it then it is a no brainer.
Have your friend give Paul at TRL a call - he is an old fashioned business man - his website was updated about 5 years ago.
Cheers