What to do if my Boss MC900B Amplifier has no sound?
- AAshley ColemanAug 13, 2025
If your Boss Amplifier has no sound, first ensure that the playback isn't paused and the volume is turned up. Then, verify that the correct source input is selected by pressing the /SRC button (blue backlights indicate Bluetooth mode, while red backlights indicate AUX input mode). Finally, check if the connected speakers are working properly.