Looks like the minimum across the board is 10 watts. So if I go ahead and make the Axioms the first purchase in my system upgrade, will I still notice a marked improvement in sound quality, even with my old amp?

By the way, I'm currently runnung Yamaha NS-10M Studio Monitors for my mains, a Yamaha NS-AC140 Center, Yamaha NS-A325 Surrounds, and a Sony SA-WM20 Subwoofer. Like I said... pretty ragtag.