reck club 3000 4000 watt dj/powered pa speaker system combo set with bluetooth/usb/sd card/remote control (two 12-inch subwoofers and 8x array speakers set) rk reck reck club 3000 pa system: all-in-one 4000 watt bluetooth pa system meets all your needs in various occasions. the powerful bass gives you a shocking feeling. multiple types of interfaces meet your needs.