Only get cracking sound

[Hada442]

I have a 2015 Forrester. About a year ago how I was getting out of my radio or not what I was playing with a cracking sound something like the noise when you’re plugging in your speaker to your Soundsystem it’s like a loose ground. Well, I’m getting this noise, I can’t turn the system off. Decrease the volume. I essentially have no control I have removed the fuse so at least I don’t get the noise, but I would like to get my Soundsystem back since I enjoy listening to podcast. Appreciate any help or suggestions.