The XTR-500 Powered Speaker System is the perfect solution for your sound system needs, bringing you two 10 satellite loudspeakers and a 15 subwoofer with a built--in 800 watt 3-channel amplifier and electronic crossover, all in one package. This complete speaker system also comes equipped with a detachable wheel set, making the XTR-500 a highly portable and powerful system. With all this and more, the XTR-500 delivers everything you require in a complete powered speaker system.