Hmmm... Ya, I have no idea... Onkyo USA website indicates in two places:
Dynamic Power
250 W (3 Ohms, Front) 220 W (4 Ohms, Front) 130 W (8 Ohms, Front)
Speaker Impedance
4 ohms–16 ohms
But I guess that's not a rating...?
I'm thinking I am safe given I don't listen at insane levels and the monolith 365s drop off at 80hz, so not driving alot of low output to them. Still, I am at the limit of my understanding and I want to make sure my receiver can drive my speakers...