It all depends on your room size, and how loud you run it for extended periods. These are the two key factors as to if and when the Yamaha will shut down.

I have a MUCH lower Yamaha than the 2600 driving an Epic 80 system with no problem. It does run quite warm, but I have decent ventilation around the receiver.

Shawn

Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.