The AC Only Explorer Pro is one of the most popular, portable sound systems on the market. This speaker is small, lightweight, and easy to transport. It is designed to provide crystal clear voice amplification, and is also great for music. This model is not battery powered, and it runs off of AC power only, when connected to a power source. It also comes with two universal microphone jack inputs on the back, and a "Voice Over" music ducking feature. Use it at schools, sporting events, corporate events, places of worship, and more!