Default Need help

Dear Developers,
I'm current using stock rom 4.0.4 with KOB 0.7. With this kernel, each time i uses the headset, there is a white noice on my right earphone.

I switched to your M1 kernel, i experience the same. However, after i manually adjust the headset sound setting from 43 to 46 or more, the white noice disappear

Can you help to guide me how to change the setting permanent.