Hey TB. I've been wondering, as I'm sure many others have, how possible it would be to build a portable power supply in which to plug your bass amp when you're out and about and away from any power outlets; preferably something contained in your car. I don't know too much about either topic I mentioned in the thread title, so please excuse any stupidity I might unknowingly be spouting, but it seems like it might only be a matter of a couple extra car batteries, maybe a big-ass capacitor or a few, and the right type of unit to convert the power from DC to 120 V AC with and outlet to plug the amp into. What say you, TB? I've always wanted to play my bass at the beach, and I'm sure you guys have some outdoor fantasies of your own.