I am putting together an inexpensive system for my living room. 100% audio, will run a CD player, tuner, ipod dock and a turntable eventually. An MM amp will be just fine and I would prefer a subwoofer output. I am powering a set of B&W M1s with a Mirage Omni S8 sub. My nominal budget is ~$500 and would like to see about 80w of power into 8ohms. I was looking at the Yamaha A-S500. Any thoughts on the Yamaha and any other suggetions?