MP300P mixer amplifier is rated at 120W. It has 3 microphone inputs and 2 aux inputs, and Mic 1 is provided with priority and muting function. Bass and treble controls and master volume control are provided. Complete protection includes short circuit and thermal protection, current limiter and overloading. These Aa amplifiers can be applied to different cases, such as supermarket, classroom, etc. and can also support individual volume control for each microphone and line input. 

DSPPA MP-300P 120 Watt, 100V Line Mixer Amplifier