●Aluminum alloy panel; Aluminum alloy knob; USB/SD Reader; Music Volume/Low/Mid/High Control; 

●Source Inputs:DVD (RCA jacks)/USB/SD Reader

● Output Power(RMS): 20W*2(4ohms) connect 500pcs Tweeters

● Power sources: AC230V/50Hz & DC12V

● Sensitivity: 200mv

● S/N Ration≥ 85dB

● Frequency Response: 20Hz-20KHz ±2dB

● Impedance: 4ohms-16ohms

● Distortion≤0.5%

●  N.W:2Kg

● Dimension: 280(W)*180(D)*70(H)mm