You can add the Poco/PocoPhone F1 to the list of supported devices as you can see. If I need it or not is a different story lol All my music I carry on my phone is in 44.1/48KHZ 320BPS MP3 format. My headphones (1More Triple Driver In-Ear Headphones) are Hi-Res compatible though so I can hear a difference but I'm not that clued up on audio engineering so don't know what settings to have. For the purpose of the screenshot I have set it to 192KHZ to show that that's as far as it goes (I have it set to 48KHZ when listening to music). Where is the best place to figure out to get the best settings?
EDIT: Forgot to add I'm on MIUI 10.1.3.0 stable ROM . It's a half arsed ROM by Xiaomi where they have mixed some lib libraries from an Oreo ROM into this so called Pie ROM
What I have noticed with the settings shown below that when I increase or decrease the volume it does take time to catch up. I don't know if this is a fault with the app or the ROM