MP300PIII economy mixer amplifier is rated at 120W. It has 3 microphone inputs and 2 aux inputs, and Mic 1 is provided with priority and muting functions. Bass and treble controls and master volume control are provided. Complete protection includes short circuit and thermal protection, current limiter, and overloading. This cheap pa amplifier belongs to pa audio amplifier, which can be applied to different cases, such as supermarkets, classrooms, etc.