I've got problems with the volume knob. The volume adjustment isn't smooth. For example, between 4%–9% the loudness is the same, setting it to 10% gets a lot louder.
I'm using Realme 6 and YouTube Music (music video option disabled).
Until this is fixed, I'm using the preamp for precise volume adjustment. I'd be great if the custom volume levels be added from Poweramp, so one could precisely adjust volume by volume keys.