Crackling on playback - Mackie ProFX6v3

[GitHub issues - edited]

alsa-project/alsa-ucm-conf issue #182 was edited from emaxoda:

Hi. I tried to add support for the Mackie ProFX6 and while it technically works (before I was getting one a 4.0 surround profile instead of the two output devices it should show) I get this crackling sound on playback whenever I try to play any sound, the craclking or distortion can be heared alonside whatever is on playback. I tried playing sound with aplay and paplay and got the same craclking noise alongside with the played track. 

[alsa-info](https://github.com/alsa-project/alsa-ucm-conf/files/9032058/profx.txt)

https://github.com/emaxoda/alsa-ucm-conf/commit/51b9b6f1a81ab55e16bba12a370afc518d961550

^ my commit

Issue URL     : https://github.com/alsa-project/alsa-ucm-conf/issues/182
Repository URL: https://github.com/alsa-project/alsa-ucm-conf