Fuhjythy Car Subwoofer Amplifier Board, 500W Subwoofer High Power HiFi Bass Amplifier Board DC 12V

With Short Circuit Protection and Reverse Connection Protection,double Insurance Design,although You Can Use It With Confidence and Boldness. With Standard Lotus Socket External Sound Input,it Can Be Connected to Computer,mobile Phone and Other Audio. You Can Choose Full Frequency Or Low Frequency Output,there Is No Human Voice Output in Low Frequency (LPF) State. The Built-in Squelch Circuit Can Some Noise,making the Sound Quality more Beautiful and more Pleasant.