Our 20 watt portable PA system with deluxe hand held microphone uses a 12V DC/117 VAC power source. It is a completely self-contained portable PA system that is great for lectures or demonstrations. Additional microphone/AUX input will also work with the wired microphone. A deluxe handheld microphone, and belt pack transmitter are included. It is available in four different VHF frequencies, channel A-171.90, D-209.82, B-184.54, and F-203.30. A version of this amplifier is also available with a lapel and headset microphone and can be found under model number PAW-150L.