... fit for car,motor bike ,computer speaker and other home audio DIY device. 3, Compact Size: 4.6 (L) X ... night. 6, Built in FM radio,Multi-functions for audio amp and fm radio 7, The detailed spec as bellow ... :Power Input: DC 12V P.M.P.O: 2 X 200 W ( Peak Music Power Out ... Signal /Noise Rasio: 90 dB T.H.D: 1.0 % Audio signal Input Method: RCA input (back panel), Mp3 Input(Back ...