These amplifiers are designed for PA systems with applications such as announcement, intercommunication, background music and broadcasting in convention-halls, shopping centers, dining rooms, auditoriums and recreation areas. These desk top amplifiers have an integrated protective circuit to withstand overload or short-circuits of output. This results in very high reliability and easy installations without extra audio processors. It is a complete range from simple amplifiers till matrix amplifiers with built-in tuner and media player.