I recently noticed that for all the hype of the SV20 and jumping Plexi channels in general recently (and I include myself), the latest Total Guitar has an awesome picture of Jimmy Pages Marshall Amp setup Pre 1973 Madison Square Garden show. EVERY amp (4 ?) has him plugged into the top left input which I think is just the bright channel. Of anyone, I would have thought Jimmy would use the jumpered setup. But (if I'm right about the input being the bright one) it just goes to prove my long-held theory that the rest of us (non-large venue playing) have totally different sound requirements to the pro's and they run a significantly brighter mix than "most" of us realize. Interested to hear others' thoughts. I did a screenshot of the photo, not sure of copyright issues though..