Yo, Adrian ! (had to write that)
Welcome to the forums. Looking at the specs for the 2809, I suspect that you would be fine. Alan tends to be fairly conservative, and you can pretty much hang your hat on his ok. I would keep the impedance setting at 6 or 8 ohms. There are many Denon owners here (myself excepted) who have been very pleased and without issues driving the M80s. You have a 30-day in-home trial with Axioms and will only incur a modest cost for return shipping to Michigan in the unlikely event that you are unhappy with them.
