[Q] [XZ] Incrase the volume limit for headphone only topic

Good morning everyone.

I've been searching ,but I did not found any tips for my request.

I'd like to increase the volume for the headphones (but not the speaker) on the Xperia Z. By modifying the snd_soc_msm_2x_Fusion3 or intsalling a audio MOD. Anything for me ?

By the way my XZ runs the 10.5.1.A.0.292 firmware.

Thanks :).