The black Anchor Audio AN-1000X Speaker Monitor is an extremely versatile powered speaker. This system is easy to use, lightweight, and provides a powerful 107 dB of sound to fill the room with your voice. It is designed to project clear, intelligible speech for a larger audience of 250 or more, and is excellent for music. It is not battery powered, and runs off of AC power only, when connected to a power source. The AN-1000X can be mounted on a stand, to the wall/ceiling, or placed on a shelf. Just switch it on, adjust your volume, treble and base, and you are ready to go. It's ideal for presentations and can be added to an A/V rack setup and used with a video projector, CD/DVD player, iPod, MP3, or PC. Use it as a studio monitor, install it in a trade show booth, or even place is in the Captain's quarters on a US Navy warship to monitor activities in the intelligence room.