The Diablo for sure. The Amati is kind of slow and with mcintosh you’ll end up with even slower. The other thing is Amati isn’t that detailed of a speaker and Mac isn’t that detailed. I’m sure tonally they could sound ok but I’m pretty positive the Diablo will be better. The Diablo is faster, has a unique sounding top end and simply offers a way better quality of imaging. More solid, more dynamic, more everything.