Even though both subwoofer channels carry the same information I have found one very nice use for the .2 capability of my Onkyo 3007. I does allow separate level control of each subwoofer channel which is a great convenience when using my Buttkicker. Now I can tweak it’s “volume” w/o having to get up and walk to the amp or mess up the level calibration between the sub and speakers if I do it remotely. Because of the inconsistency between LFE tracks on movies this is huge for me. Only drawback is that I haven’t found an quick way to do it on the Onkyo whereas my older Denon had one button that took me right to the speaker level controls.