I googled around a bit...no doubt you've done this already. Dick Olsher of Stereophile had very, very positive things to say about this speaker with Accuphase electronics. That says something to me...generally Accuphase is warm, Class A SS...not perhaps the most detailed...a little smoother.
also thought i saw somewhere very difficult 2ohm load at some points in the audioband...very tough on some amps. Not sure about Accustic (probably fine actually)...but certainly should not be a problem for Gyphon. the Antileon and Colosseum double all the way down to 0.5 ohm load (and also double again all the way down to 0.5ohm on peaks!).
I am also aware that Gryphon does have quite a natural tonality in the Colosseum and the Antileon as well, though it is also a darker balance. Given commments about Accuphase, i wonder if that might not be a good fit? It's all a matter of personal opinion in the end. Just some thoughts. good luck!