Jim,

I have been playing at Farmers Markets for the last three years using two Roland Microcubes. I use two, one for a vocal and one for a guitar mike. I don't use any guitar electronics. They have worked well for the purpose of allowing people to hear me in a noisy open-air environment. I don't know about the bass response as that hasn't been an issue. They last pretty well on one set of batteries as well. They also draw curiousity seekers since they look a bit like car batteries.

Roger in Baltimore