Sony audio settings doesn't work on nougat. I tried on OnePlus 3 oxygenOS 4.0.3, Redmi Note 3 LineageOS 14.1 and NitrogenOS. It works if I do the adjustments in Sony sound enhancement and open MusicFX and turn it on and off. It works only for one time. Once you pause the music, Sony sound effect is lost. If then you try to adjust something in Sony sound enhancement, media volume turns to full and you can't adjust or lower the volume. The volume sliders work but the sound doesn't get any lower. Also there is no sound effect even at this point. It is just loud without any sound processing. It happens on all nougat ROMs. Tried with different ports and mods, all have the same problem. Please look into the issue.