Do high dollar mono blocks truly improve the Sound Quality over the mid tier amps

I looked at the picture of your room and I see a lot of glass there I don't know if it's covered with heavy drapes or blinds but if it isn't you'll be getting a lot of bouncing off the glass which will screw up your sound.

Edibles would be a more direct investment in sound quality. 

Some good advice here, some questionable. The truth is there is only one person who can answer your question and that person is you. If you bought your Classe amps from a local dealer, you should try to talk him into a home demo of the amps in which you are interested. If that is not an option, you would be buying with blindness and hope. As others have stated, you have a very nice system in a room full of glass and highly reflective surfaces. I don’t see any treatments (blinds, drapes etc.) on the large front windows and this could be a WAF issue, but covering those might be of more benefit that changing amps. Otherwise, try to do what we’re all unsuccessful at - enjoying what you already have.

l love the Boulder Preamp idea ... or others on that strata!