For what it's worth, I have no doubt the A-70 will power that system at moderate to loud levels without breaking a sweat.
I have heard Macintosh amps compared to Accuphase amps, but I don't think they're even in the same ballpark TBH. There is nothing an Accuphase A-class amp does not do superbly in my experience. And you should definitely go for one A-70 over two inferior bridged models.
Disclaimer: I own an Accuphase A-60. If I can save up enough money I plan on trading up within a year. My contacts at the stores here in Tokyo told me the A-65 represented minor improvements and was not worth trading up for, but that the A-70 is a significant step forward.
I have heard Macintosh amps compared to Accuphase amps, but I don't think they're even in the same ballpark TBH. There is nothing an Accuphase A-class amp does not do superbly in my experience. And you should definitely go for one A-70 over two inferior bridged models.
Disclaimer: I own an Accuphase A-60. If I can save up enough money I plan on trading up within a year. My contacts at the stores here in Tokyo told me the A-65 represented minor improvements and was not worth trading up for, but that the A-70 is a significant step forward.