A complete Bluetooth ceiling speaker system, containing the Q Acoustics E120 amplifier and two Power Dynamics NCSS5 ceiling speakers. This ceiling speaker kit includes all necessary installation and setup components and provides many user-friendly features. The E120 is a Bluetooth wall amplifier with a back box that is installed in a cutout in the wall for a near-flush and subtle finish. By using Bluetooth, you are able to pair a suitable smart device with the system and wirelessly stream audio from any app or website.