1Amplifier Kit,Car Amplifier 2Fully integrated solution,USB/SDCard Insert 3Subwoofer output 4FM radio,LED displaY Hi-Fi Audio Stereo USB/SD Card Insert Amplifier KitBrand new Mini Hi-Fi Stereo Amplifier for cars, motorcycles, or boats.Compact design and simple to install; perfect for boosting the sound quality of your stereo, especially in avehicle.Good quality and good value device that will ...