When I play with my fingers, the guitar cannot be heard. I use a little Roland Micro-Cube amp with battery power. Someone else said it should only be loud enough to be heard and not blowing people off the sidewalk. I add a little bit of chorus effect to it. It just does something for the sound which I find very cool but, again, just barely there.

But I have only busked on the street once this year. It's just been too hot and too humid. Like right now, it's not hot but it is oppressively humid and I just don't feel like busking in that. I already have several rags and singalong type songs ready to go on the uke which has electronics installed on it but I'm waiting for a bit better weather.