Your problem is simple you have a way too expensive speaker on cheap but good amplifiers, the general rule in audio is that the electronics cost the same to twice the cost of the speakers. So if you are using a $9k speaker you need way better electronics then what you are using.
Now then I have to ask what is the rest of your gear, if it is of a similar level of quality why did you invest so heavily in the speakers without realizing that it is the quality of the electronics and the resolution of the source which makes the speakers sound good, you can take a cheapie pair of speakers and play them on really expensive electronics and you will be impressed, but the opposite does not hold true.