I've recently installed Solus on a Dell 9360 and have encountered an issue where the audio out always has an intense noise in the background. This issue has been reported by many others on different distros. I have managed to fix this issue by increasing the Intel audio card's headphone mic boost to 10 dB, after which the noise is completely gone.

Here's my asound.state file which I restore at boot to mitigate the issue: https://hastebin.com/epezonavod.cs