ACTUALLY (putting on Radioshack pocket-protector and taped eyeglasses) I have a rather interesting portable PA system in my store that has several neat features: You can run it off of AC,DC,or batteries. It has wireless capability,so you could use a wireless lapel mic or wireless pickup. It's on sale for $99. It has simple treble/bass adjustments which should be sufficient,but I believe it only has one mic input.