My Denon 3805 would also shut down driving my previous speakers (Infinity Kappa 8, 4-6 ohm 86db). It is hasn't shut down at all with the M80's. I don't know the specs on the 3300, but my guess is it'll be fine with the M80's (others pls correct me if I'm wrong). If not, certainly the M60's.

Epic 80 / SVS PB13 Ultra
Denon 3805 / M2200 Outlaw Monos /
Sammy 55" LED