Hey everyone. I am really confused on alot of things so I'm hoping someone can help me out a little bit. I currently own a Mesa RR 1x15 (400 watts 8 ohms) and plan on getting a RR 4x10 to go with it (not sure what the wattage is on that one, maybe someone knows?). Anyway, the next purchase I have to think about is a head. I don't want the poweramp/pre combination, tried it and i hated it. So here are my questions. -Say I get a 600 watt head. Would that be effective with two power hungry cabs? Will I be underpowering them? -How much power do you think I should be looking for? -I have an oppurtunity to get 2 GK 800RB heads at a very cheap price. Would using the 2 of them at the same be ok? Is that even possible? If my questions didnt make sense or if i need to clarify something just tell me, im new to this stuff so i didnt know where to start. Thanks!