Originally Posted By: Shady

I want to upgrade my 10 year old Yamaha receiver, and I've been looking at the Denon AVR4810CI. The problem with this is that it's not rated for 4 ohms so it's not going to power the M80s.



Incorrect.

It may or may not be rated to push 4 ohms, but it will. IMO there isn's another brand of reciever that pushes 4 ohm speakers better than Denon.
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My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD