Share 'Small venue gear question'

Okay, new topic. I am wondering what y'all use for amplification/PA in a small setting. I am considering a small portable PA system that won't peel the paint off the walls, but would work well for small coffee houses and house concerts that don't have their own system. So it can't take up much space, and if it could run or be adapted to run on batteries, that would be cool too. Just want to be ab…