Bluetooth mini ceiling speaker packages are a convenient background music solution for small areas, washrooms, waiting rooms and around the home. SL3 and SL4 speakers are moisture resistant and easy to fit into false ceiling voids, providing low level music quality output from a discreet, unobtrusive installation. IWA amplifiers have an inbuilt Bluetooth receiver and an Aux input (inc. digital optical) and Aux output for daisy-chaining onto further amplifiers. IWA amplifiers also have an internal power supply, meaning they can connect directly to a 100-240Vac mains supply and are supplied with speaker cable for easy installation.