Model A950 Quantity 1 piece(s) Color Golden Material Aluminum Amplifier Class D Function Supports music play w/ MP3 WMA format w/ memory function Singnal Compatible Digital audio signal input of computer cellphone CD VCD DVD and MP3 Frequency response 20Hz~20KHz Hz Number of Channels 2 Input Power 12~25W Peak Power Output N/A RMS Power Output 25W 4ohm 12W 8ohm Input Sensitivity 200mv+/-10mv lnput Impedance 25W 4ohm 12W 8ohm Signal To Noise Ratio >=90dB dB Slewing Rate Efficiency: 81% @ 20W / 4ohm 88% @ 12W / 8ohm Input Voltage 10V-15V Speaker Impedance 81% @ 20W / 4ohm 88% @ 12W / 8ohm THD (Total Harmonic Distortion) 60dB Interface AV port is input port black and red are connecting ports Remote Control No Application Car mobile advertisement clothing shop barber shop recreational place library Shopping mall home theater factory shop Other Features Provides you great high middle and low frequency tone; Built-in speaker protection and power on extending circuit; Non-balance to balance circuit control distortion of IC high fidelity and great dynamic; Over current protection avoids power on / off impaction making signal transmission more smooth and tone better; Start indicator; With pre-amplification it can be widely used Packing List 1 x Car amplifier 1 x 100~240V power adapter (100cm cable) 1 x Audio cable (130cm) 1 x Power cable (100cm / 3-flat-pin plug)