In regards to how high to set gain and the master volume to get the cleanest sound possible: I went to my amp/cab today to do some gain/master relationship testing. Everyone (including the manual) says that in order to have the best signal-noise ratio, you turn the gain up as high as possible. Cool. So I turned the gain to 3:00 (3/4). Turned the master down (of course). True, I got some very, very clean sounds out of it (like Ampeg Insider mentioned about turning up the gain in the 3 Pro in another thread). But then I took a gander at the almost solid red peak light. That wasn't cool. I mean, it sounded cool, but that couldn't be good for the cab. So I turned down the gain to 1/2. Got the red light with every strong A string and definitely anything on the E string (I play a 4-stringer). So basically I had to put the gain to a bit less than 1/2 but then I had to start turning the master up, and I'm back to where I started, with a bit unclean sound. So what do I do? I play an active bass...is that what is making the input clip? I have the -15db button pushed so I don't think that is a problem. I just don't get it. Will EQ'ing it in a certain way help? I guess what I'm saying is, how can I turn the gain up more to get cleaner sound if I"m already clipping at halfway? Some additional info: I just switched to a 2x10 from a 4x10. Does that have any effect on the gain peak? I'm planning to add another 2x10. How about then? Any help is appreciated...thanks! -T Now, what is it that I am doing wrong?