Default audio quality

now I've flashed several roms and I had the opportunity to do a lot of comparisons on performance, visual audio. after such comparisons I realised that a Sammy based miui ROM running android 4.1.1 had the best audio without any equalizer or audio sounds awesome. I've upgraded and downgraded but the miui has it the best. I've tried boeffla and its not as good as. so what can I do to get the best audio for 4.4.2 roms.


help please!

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