Sweet speakers. I used to drive 2+2 medallions with ARC VTM200 monoblocks (6 6550C's / amp). They did the trick, sounded very good, but certainly were not overkill. It may come down to your room size and desired listening levels.
Power requirements for Acoustat 2+2s
I am going to fire up some 2+2s and was thinking of using my VTL MB150 mono blocks. They are rated at 150 per in to 8 and 4 ohms. Do you think that will do in the power department? How much power do these actually need? VTL said they might not have enough, but I don't know if they knew the speaker that well.