Your unit has pre-out. Why not keep an eye open for a used 100~150w power amp that you could plug the M80 into through the pre-out on your Integra??

I don't know if it's like where you live, but here I picked up a great AudioSource One/A amp for $75. There are always people selling separate amps. The M80s would shine and save your receiver for powering the other speakers

Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5