Is it smart to have batteries in the mic mechanic 2, even though i'm plugging it in?
Just in case there is an issue during a performance and the adapter? That way you can pull the adapter out and just run off batteries? Or is that maybe something that would cause an issue?
Yeah it couldn't hurt! When you have a 9V power adapter plugged into the pedal, it'll ignore the batteries and not draw power from them. Just don't leave batteries in there for years as they tend to eventually leak and get gross