Roland BA-330: Big Sound On The Go Take your show on the road—any road, anytime, with or without an electrical outlet, as long as you have the Roland BA-330. The BA-330 is a portable stereo PA system capable of cranking out an amazing amount of sound while running on eight AA batteries. There are enough inputs to comfortably handle two mics and two guitars or two stereo keyboards, plus there’s an AUX in for your MP3 or CD player. Built-in effects,...