I am currently bi-amping directly from my Yamaha receiver, but I want to switch to an Outlaw amp. My Yamaha RX-V1600 has the pre-amp outputs, so I was looking at getting either the 7125 or the 7700. Since I am only using a 5.1 speaker system with Polk RTi10 mains and Polk in-wall surrounds, I was thinking about getting a 7125 and bi-amping the mains with the 2 extra channels on the 7125. The alleged "hum" issue on the 7700 has kind of scared me off these until I get a pre-pro with balanced outputs. Does getting the 7125 and bi-amping with it make sense?

Thanks,

TL