@mx4pro I assume this tweak happened since Flyme 5 with the detachment between Meizu and Dirac.
@Vympel I’m in a dead end, I really hope I’m wrong but, it seems there is no custom recovery for the Pro 6
I tried to install v4a and his drivers manually (and Dolby Atmos in a second time), but it still don’t work.
Yes no custom recovery, unfortunately Meizu devices are not so "famous" so few or even nobody works and have interest to work on custom rom/ recovery.
There are only one active dev on xda for Pro 5 (faust93) who made regular update wich show that it's possible to make custom rom pretty easily.
To be honest, I'am not sure if V4A in top end phone with dedicated Dac would change something.Despite the EQ and other stuff wich might change the sound perception by your ears
it won't do anything else.
I know by experience that's a powerful tool to improve audio quality but in our case as we already have a dedicated DAC and a tuning by Meizu it won't produce the huge improvement it does
in common devices without dedicated DAC.