Reinventing the Portable P.A. Most portable P.A. systems out there are good for only one thing: speech. But when in comes to handling music, they drop the ball. This is because they are seriously lacking in the bass department. We solved this problem by adding a subwoofer. In fact, the Traveler is the world's first battery-powered, portable P.A. system with a subwoofer. Because it is a VocoPro, singers will appreciate the on-board DSP effects that are designed especially for singing. Whether your next event is a school auditorium, coffee shop, or hotel ball room, take along a Traveler and get the job done right!