Working Voltage       DC 12V 5A

Frequency response     20Hz~20KHz

Output power        25W 25W 

Harmonic distortion      <0.05%  4  1KHz

Signal-to-noiseratio      >85dB

High volume control      ±12dB  10KHz

Bass control     ±12dB  100Hz

Signal level     220MV    47K

FM Frequency range   87.5MHz-108MH

Speaker Impedance    4-8

RCA input      One slot (MP3/ MP4/ CD available)