So, I think that I've been fooling myself with thinking I like a tube sound. I don't like when I turn up and it gets over driven. I constantly try to get a cleaner sound from my Mesa 400+...one that matches the sound of my practice amp...a Groove Tubes pre-amp and a Solid State power amp. Plus, I always seem to run out or get close to running out of power when I play live. I'm always (even at practice) up around 7 with the master volume and the gain knobs. What I want to ask you all is I was thinking of getting a QSC PLX 3402 (I think that's the biggest) amp and mating it with the GT pre-amp for live shows. I believe it's rated at 3400 watts into 4 ohms bridged. I have a 4x10 avatar (4 ohm). I want to be mind numbing loud and clean...very clean. What do you guys think? I'll probably hold onto the Mesa for a while...just in case i don't like the outcome. Would the QSC be my ticket to cleanliness and loudliness?