Hi Pat, I am using the 4310's predecessor, the 3808 and it drives the M80s to over 100db and stays clean. The 4310 will work great with the M80s and it should be all you need for amplification unless you like it really loud. The 4310 has amp preouts which will allow you to use it as a pre/pro to feed into an external amp such as Axiom's A1400 or similar.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70