Onboard DAC on Z390 mini-ITX ASRock vs Gigabyte

[Cerkoniav]

Question (tl;dr):
How does the onboard DAC/onboard audio on the ASRock Z390 Phantom Gaming ITX/AC compare to that on the Gigabyte Z390 I Aorus Pro WIFI? (and compared to Asus ROG Maximus VII Impact if possible)

Background: I'm looking to potentially upgrade from my Skylake i5 to an i7-9700k, but want to keep the same excellent sound quality as my current Asus ROG Maximus VIII Impact. My worry is that my current board might have a better DAC than available (and within price range) boards. When I switched to my Asus board from an old ASRock one, I was blown away by the far superior quality of the Asus' onboard DAC; now, I don't want to downgrade back down again. I don't have the space nor interest for sound cards or external DACs/amps

Bonus: How good is the audio enhancement software bundled with those two motherboards' drivers? I quite like Asus' sonic studio currently, but their mini-itx ROG line up is far outside my budget