Also, I've heard that SRV, Keith Richards, and others run it through two amps at once so they can have clean and dirty going at the same time. I know of bassists who will have two amps, and run it straight through one with just clean simple tone and will have all the weird effects going through the other.
How do you do it? In that other thread, someone mentioned something called a "junction box" or something. So how do you do it? And what else needs to be taken into consideration? I'd really, really like to know!