My Mom has a pretty nice PA system for her music school. I wish I could remember the names of it all... but I think something like this would be really sweet for modular expansion on how much sound you want to put out. For less than $400 she could double the volume
She has a little control board and several mics. If I ever try to host an event here (which I would absolutely love to do sometime) I'll have to drag her stuff out there. The PA system at the last few events has been horrible.