I have not heard the SA 250, but I did hear the SA102 on demo, at my Pass dealer. It sounded excellent, to me.
I haven't heard the 250.5, but if it is as much of an improvement as the 350.5 is, it will be an excellent piece, in my opinion.
The Pass X amps run warm. The Plinius SA 102 (in selectable Class A, where it sounds best) is the hottest runing Class A amp I've ever seen. I would not use it in Class A very often, here in Phoenix, in the summertime.
I haven't heard the 250.5, but if it is as much of an improvement as the 350.5 is, it will be an excellent piece, in my opinion.
The Pass X amps run warm. The Plinius SA 102 (in selectable Class A, where it sounds best) is the hottest runing Class A amp I've ever seen. I would not use it in Class A very often, here in Phoenix, in the summertime.