Increasing volume at Rom or preferably kernel level
I'm having a small issue with my current phone and headphones. The problem is that headphones and phone have no problem with higher output volume. Temporary solution - speaker boost, trouble is: it causes any equaliser to FC.
TL;DR & point of my question
How can I increase the volume at kernel level? If that's not possible then rom level would be enough. No apps, just pure source changes please.
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