Pyle PWPBT57 in-Wall Bluetooth Audio Receiver, Aux Input for Sound Systems Built-in Bluetooth for Wireless Audio Streaming - Works with All of Your Favorite Devices (iPhones, Androids, Smartphones, iPads, Tablets, PC, etc.) - In-Wall, Wall Plate Audio/Music Control Includes (2) Wall Plates (Bluetooth Audio Source & Audio Output) - Universal Standard Wall Plate Size Connects to Home Theater and Additional External Devices - Aux (3.5mm) Input, RCA (L/R) Output Includes DC Power Adaptor - Fits U.S. Electrical Gang Boxes - Rotary Volume Knob & Button Controls