Yeah people asked every time I said I used a sound card... My X470 audio was just so flat, the Xonar added so much more range and clarity.Mobo audio has come a long way but I use a Creative Sound Blaster G3 USB Dac and I get fantastic Dolby Atmos audio for movies and games.
Now I have an Asus B550 which uses a slightly newer chip I believe - I did a comparison for a few days before taking the sound card out. I took it out when I thought "audio's been pretty good on the sound card, let me.try the onboard" ... I'd been using the onboard that whole time just proved it wasn't needed anymore!