products name:public amplifier brand:Kinter model:MA-200 color:red,blue,black,green ... FREQUENCY RANGE--87.5MHz—108MHzSPECIAL FUNCTION:USB,SD,FM,WITH DIGITAL DISPLAY ,ANTENNA AND REMOTE CONTROLSPECIFICATION:58*37*33CM 30PCS/CTNG ... .5K N.W:20K 4 channel public adress system sound digital amplifier