PTA4 gives you the power and versatility you need in a professional sound system. Its wide frequency response makes it suitable for amplifying music or vocal program material. The front located 3.5 mm jack allows you to connect the input of various of MP3 devices conveniently and the microphone pager/mixing function offers the flexibility of using it at paging or musical events. It can be used for meeting halls, house, restaurant, school, stores, live bands, or office.