230554 1. Do not support LED display screen， FM， and remote control. Support bass tuning， through audio and bass compensation adjustment. 2. With overload， short circuit and overheat protection function. Note: To install and wire， please refer to the instructions on amplifier interface. Color: Black Product size: about 155 x 95 x 38 mm Package size: about 160 x 100 x 47 mm Working voltage: 9-14V/2A Input impedance: 47K Output power: 25Wx2 (RMS) Speaker impedance: 2-8Ω Working frequency: 20HZ-20KHZ Interface: 3.5mm 1 x Amplifier In original package