"...The point here is to get a meaningful upgrade for the main 2ch part of my system..."
I think that is my problem, changing a good amp to another good amp isn't going to be a big change in most cases. For the best 2 channel upgrade for you, it would be a new 2 channel pre-amp.
I think that is my problem, changing a good amp to another good amp isn't going to be a big change in most cases. For the best 2 channel upgrade for you, it would be a new 2 channel pre-amp.