Tiger_Fan,
Thanks for your inquiry, much appreciated.
Darren is right on the money, you would need the AKSA 100. This is because the output stage of the AKSA 55 is not robust enough to handle the current which a 2.7R speaker might draw. In fact, you could run these speakers most of the time without danger, but at higher levels, and with strong bass notes, there is a good chance you would fry the outputs.
But the 100W AKSA would be fine and dandy - as would the LF100.
Seano makes the very good point that there are some fully built, traded 100 AKSAs, all N+ versions, I think there are about four in stock at present, but I'm not in Melbourne so can't be sure for a couple weeks more until return!
The price of a traded, refurbished AKSA 100 is a little over the 55N+ kit.
Cheers,
Hugh