For me, I would do the surgery to bi-amp.
BiAmp Focal Kanta 2 speakers with 1 set of posts.
I have a Primaluna EVO 400 Amp and Preamp and Focal Kanta 2 Speakers. I think it would be an improvement to add another Primaluna EVO 400 and run them in mono. I was told it was not any good unless speakers had 2 sets of posts, 1 for the High and 1for the lows. Any help out there?