The OMNITRONIC MPZ-500.6P is a 500 W RMS PA mixing amplifier for 70 V, 100 V and 4–16 ohm loudspeaker systems. It provides six independently switchable zone outputs, three microphone inputs, three stereo line inputs and one stereo line output. An integrated MP3 player supports USB and SD media. Treble and bass controls, priority circuitry, chime, overload protection and a cooling fan are provided in a 19-inch, 2 U rack-mount housing.