... Card Audio Stereo 12V Hi-Fi Amplifier Kit for Car MotorcycleBrand new Mini Hi ... -Fi Stereo Amplifier for cars, motorcycles, or boats. ... display2 Professional automotive amplifier output, BTL integration, HI - FI effect.3 Big power, bass vigorous forceful, ... sound4 With sound volume, soprano adjustment, bass adjust potentiometer and indicator lights5 Function significantly ...