I have a GIGABYTE GA-770TA-UD3 AM3 AMD 770 Motherboard. I'm running audio through my Yamaha RX V-620, Polk Audio sub and I just bought some Polk audio monitor 40 series II's that I haven't hooked up yet. Every time I turn my volume up past a certain level I hear constant static through my speakers when they are not playing any music. So I'm looking to replace the receiver. What brands should I be looking for ? Onkyo? Yamaha again? Pioneer? Lots of different ones for sale on craigslist so let me know what you recommend.