Gonk is correct about the Yamaha. I actually use the e492 for my center and 2 rears in external mode. But it does not compare to my adcoms, I'll be replacing it and one of my Adcoms with the new 7500. It sounds just OK but nothing great. There is also a buzz and the dynamics are limited. While it will work for the short term, I believe you may want to upgrade as it will be the weekest link in your system.