#1 Speakers and amps need to be made synergistically.
Why "made"? Why not just matched?
I know being an audiophile is really pretty tame and doesn't hurt anyone but I really don't like to see smart people believing in not so true ideas. To get the most out of a speaker the driver needs to be designed with a particular amp. There are many reasons for this if there is one amp and 2 drivers putting out different frequencies you are compromising the potential performance of the speaker. A high end speaker engineer selling a speaker without a designed amp is like selling a Ferrari body body being sold without without a suspension and saying just add or match a suspension until you get it right, no one would put up with that. It is understood that expensive cars need to be designed expensive stereos also need to be designed not mixed and matched.