Amplifier - Kinter MA 700 USB Car MP3 FM Amplifier with remote control (2 canals, 500 watts, AUX) Amplifier output power of 500W 2 channel Card U disk SD / MMC can be played for music and FM stereo radio and this item Support MP3 music format; (USB + SD + MMC + FM) integrated circuits, minimal distortion and powerful energy 1 main channels and 1 surround channel output; Anti-interference and anti-capacity energy, circuit DSP sample sound field of the four; Ideal for your car, motorcycle, boat, etc.