The topping driver kit includes instructions for setting up dsd in foobar. https://dl.topping.audio/drivers/Topping_Driver_installation_and_use_guide562.zip But I didn’t like the sound, it sounds better in audacious. https://audacious-media-player.org/

I didn't like how the HD650 works with the Q15, even on ultra high gain it seems to need more power, Hifiman EDXS plays even worse. 7hz timeless and kinera pandamon played well, as well as Kennerton magister heritage (32 Ohm).

bluetooth

Had such issue after desktop mode, reboot fixed. Also sometimes when I turn on peq, the sound becomes much louder.