Weighing in at a smart 19 lbs., the PRA-8000 contains a 40-watt Solid State amplifier matched to an 8-inch built-in speaker, knocking out more strong, clear sound than any in its class. The included wireless handheld mic will broadcast effortlessly up to 100 feet away from the receiver. The control panel also includes an input for wired microphones, as well as auxiliary inputs for MP3 and other media players. Sync your smart phone direct to the sound system through built-in Bluetooth technology or play MP3 files through a built-in USB port. The PRA8000 even includes an SD/MMC port. Operates via AC plug, or can be used remotely for up to five hours with its built-in rechargeable battery.