Does anyone who's ever owned or played through this head know of any distinct differences between these two channels? I toyed around with them today but didn't hear much of a difference at all. Apparently the 2nd channel is supposed to be a bit more dirty. But then again, I stayed at really low volumes and didn't have much time with it. I probably wasn't driving her hard enough to hear the main differences. But for those of you who have played this head, which one was your favorite? I'm not trying to take after anyone, but I'd like to know which one gave you the most desirable results and why.