In my house are many rooms, if it were not so, I would not be able to prepare places for so many amplifiers.

I can tell you, not all solid state amps sound the same. Not even close and the differences are obvious to a discerning listener.

However, if one believes as an a priori that all "well designed" (please feel free to drive your Kenworth through that one) solid state amplifiers sound the same, then all distinctions will end up like the toes of Cinderella's sisters, so the foot might better fit.

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.