... ,SD connector,high sensitive microphone 2.RMS power: 160W Wireless Amp PE-112DUDVD player,USB,SD connector,high sensitive microphone Description ... 18V 10AHFrequency response: 35-20000HzSPL: 94dB(1W/M)T.H.D:<1%Input wired mic: -58dBV 600Speaker: 12”woofer,horn”tweeterRMS ... to make the performance perfect. Rear Picture PE-112DU Wireless Amp