The PowerPro SD is an easy-to-use PA system that's as powerful as it is flexible. A portable sound system needs to be just that – portable. The battery-powered PowerPro SD has built-in wheels and a telescoping 4-position handle so it can be easily moved around for indoor or outdoor activities at schools, sporting events, hotels, conference and event facilities, houses of worship functions, for ceremonies and emergency response situations. A single 90-watt speaker can effortlessly handle 1,000 people and many more with additional wired or wireless speakers. The PowerPro SD is fully self-contained sound system that can handle straight audio reinforcement for two wireless mics and playing music through its CD player. It's also the first portable PA to include a USB port and SD card slot for added digital play & record capabilities. The PA919SD also has all of the necessary input connections to play audio from computers and other devices. Since distributed sound to an audience is preferable to a single source, the PowerPro SD is the first portable PA which can transmit audio to an unlimited number of wireless companion speakers (within its 300' range). It can also be cabled to additional speakers. The PA919SDQ2 package bundles one PA919SD with two Q319 microphones.