Model: MA-200 Size: 165 * 180 * 45MM Input: 12V5A Output: 4 channels FM Output: Yes Card Reader: SD / USB Interface Output power: 41W +41 W +41 W +41 W Total harmonic distortion: 85dB Treble Control: 12dB Bass Control: 12dB Signal level: 220MV 47K FM frequency range ----- 87.5MHz--108MHz Front Features: Treble, Bass, switch with volume control, remote control receiver window, USB / SD / MMC / CARD card function selection key Back function: 4-channel speaker output, DC12V input, high-quality AV jack, MP3 jack, radio antenna.