The AN-135+ is a lightweight, easy to use powered speaker monitor. It operates on AC power when connected to a power source. The speaker monitor comes in black or white. It is stand and rack mountable and can also be placed on a shelf, desk, or AV cart. With crystal clear sound, fill the room with your intelligible voice or music. Use the AN-135+ in the classroom, boardroom, conference room, lecture hall, studio, office space, install project, and more!