What if the stereo sound is too low?

Stereo is very low for several reasons:

First of all, the signal input to the stereo system is very small, resulting in very low sound.

Second, there is something wrong with the audio line. You can try using an audio cable instead.

Third, the problem of the audio itself, due to the internal circuit failure of the audio, the sound is very small, and it needs maintenance to solve the problem.