Designed to bring about the best possible wireless audio solution for your home, it plugs directly into your wall outlets - no wires, shelf space or expensive receiver needed. All you need is a Bluetooth-enabled audio device. And don't be fooled by its size. This small wonder delivers a full spectrum of sound. A free downloadable Android app gives you additional functionality. With it, you can browse music with cover art, adjust volume, and fully customize the digital signal processing (DSP).