My guitarist just bought a modded used Rivera, and he found a cult-like following (of intelligent users) that explained settings, suggestions on how to use the amp, best-sounding tubes to use, etc. I did a search in TB and the closest I found to 1001 discussions like that is how to make the 1001 sound like the 800 (biamping modification suggestions on non-GK cabs were interesting!). Do you know of any websites dedicated specifically to the 1001? Or maybe just GK heads in general? I've had a 400RB and was satisfied, wanted an 800RB for a bit more power but got the 1001 because it was available, now I just need to maximize its potential.