The Bluetooth audio adapter works with any older stereo with a standard analogue input, such as RCA or 3.5 mm jack, so it can be connected to a stereo to receive wireless audio from the TV or other Bluetooth devices, such as a smartphone or tablet. This allows you to watch movies on your LG TV by transmitting audio to the stereo via Bluetooth. The stereo must have RCA or 3.5 mm jack inputs for physical connection to the adapter.