just spent a couple hours playing, and this thing is $%ing awesome. didn't really have time to mess around with it too much, mainly just the different gain stages. the 3rd channel had about as much gain as my marshall's lead channel, so it definitely has plenty of gain. even with loads of gain though, its never real fuzzy, very thick. i did run into a couple problems however. my marshall's volume controls don't work, so i probably couldn't have gotten it quite up to band levels. I changed the engl's output to the line out rather than instrument out, which didn't change anything, but let me use the line level on the engl as a master instead. it should be plenty loud enough now, though i'm still not sure why the Marshall's master volume isn't working... that should be part of the power section- the reverb works...
another thing, just bought a second 2 button footswitch to use with the head, doesn't work for some reason. the footswitch i already had works, and they appear to be the same basic generic 2 button footswitch. the new one when i plug it in just automatically turns everything on and i can't control anything with it. any clue why, or what i'd need?