Efficiency is the key. The power rating is a max power, but the Axioms don't require more power to run. They are just rated for handling more power, but sound great with 100 Watts/channel from a quality receiver.

I agree in that the Dennon should have no problems with either, the Axioms should play a little louder (3-5 dB) with the same receiver due to the efficiency specs.

-Dave

M80s VP150 QS8s EP500s
ravenmanor.com/cinema/