This compact Bluetooth audio amplifier allows the connection of Bluetooth devices to low impedance speakers via the built-in power amplifier. It also has an auxiliary input so devices can be connected by 3.5mm jack connection. The unit can power up to 2 x 15W speakers at 4 or 8 Ohms and is supplied with two 3m speaker cables and 1 x 4 way phoenix connector. The compact design makes the unit ideal for fitting into small spaces like ceiling voids and is powered by a 12V PSU (Supplied). The unit is ideally suited to ceiling speakers but can work equally well with wall or floor mounting units. Connection to different devices is simple and secure . Please note the Bluetooth connection overrides the line in connection when playing music when both are connected at the same time.