FireBros. said:
I've always played at churches, that had reasonably good sound systems. I can't imagine having to project your tone to the whole room with just your guitar amp. The powerful amps like twins and marshall full stacks were necessary back in the 60's and 70's because of the low power and poor quality of sound systems, at that time. IMO an amp should be used as a tone generator and personal monitor, only. A miced guitar cab, through, even a mid quality modern PA will have much more consistent tone, throughout the room, than trying to spread your sound just from your amp. Like stevo said, usually an amp just sounds more and more dull the further away you get. It's not a matter of volume, it's a matter of getting that great tone you worked so hard for, to as much of the audience as possible.