Fairbuds XL equalizer profile

Hi!

When connecting the Fairbuds XL via Bluetooth, a default equalizer seems to be applied. It sounds pretty good.
However, when playing back audio via the integrated CM108 chip (when plugging them into USB) the equalizer doesn’t appear to apply at all.

I’d like to apply the equalizer manually on the side of my PC, however I obviously have no profile.
Is the used profile some kind of default for the chip used inside?

If none of you have an idea, I’ll try to find documentation for the components used and see if I can dump the profile using my logic analyzer.

Thanks!