My take: You have two challenges to meet to permit your DYNAUDIO’s to max out their potential. I would suggest that you do it in this order
(1) Amplifier power ratings
DYNAUDIO craves high-current amps…. WPC alone are meaningless.
Another word on power: if your speakers are demanding to drive you’ll need a suitably muscular amplifier to support them. Don’t look only at the headline power figure - see what happens when the impedance drops to four ohms. If the number nearly doubles, then your amplifier has good current delivery and will be capable of driving more demanding speakers.
I would stay away from tube amps and stick with refined and beefy solid state options,
(2) System synergy matches
Now, because you have a much shorter list of contenders as you carved out the pretenders, you can now start the auditions and scope out reviews for that ethereal system synergy option tailored with your speakers.
You will get a plethora of amp model suggestions herein as replies to your post. But they have a high element of personal bias pushing their fave. Hopefully this simple matrix assists in assessing their recommendations as a candidate for your ultimate choice.