I was wondering if anyone was bi-amping their main fronts using when running a 5-channel system, as outlined in the AVR300 manual, and how they would characterize the difference in the sound as compared to just running two channels into the mains. I've had my AVR300 for about a month, but I've only been running it in 2-channel mode so far. Today I had my Panasonic HD plasma wall-mounted, and the room wired for HT, including a double-run for the fronts for bi-amping. My system consists of Kef iQ9's in front, iQ6C center, and iQ1 rears, with a DV79 and Tara Labs cables. I've yet to hear the AVR300 in 5-channel mode, so I'm itching to get home tonight and start playng with it!