Either would probably be fine - heck, most any decent 2-channel w/ some real ooomph will do the trick. Our Yamaha was OK but in my infinite wisdom decided it was somehow "lacking", went and dropped in a used 2-channel w/ @least 140/per, and calibrated by the book and it seemed better (but of course, not perfect). Then I got to messing around and sorta calibrating by meter & ear, adjusting center level just so, etc. - and I'm sure it was 99% dumb luck (extra emphasis here on dumb) but hit the right combo. That whole room now sounds right (enveloping, whatever snooty phrase) and it's not just to me - practically everyone who shows up makes some unprompted comments and they're all positive.
The Emotiva's will have the ooomph, for sure - and so will a lot of other things, too. The main trick is to take the load for the fronts off the Yamaha and it can pretty much handle the rest just fine. If you can find a deal on a used amp w/ maybe 150W/per you mght be able to same yourself a couple of bucks and get lucky, too.
The Emotiva's will have the ooomph, for sure - and so will a lot of other things, too. The main trick is to take the load for the fronts off the Yamaha and it can pretty much handle the rest just fine. If you can find a deal on a used amp w/ maybe 150W/per you mght be able to same yourself a couple of bucks and get lucky, too.