Hey, I had the same issue, and it was my smart home devices causing the unblocked static. I turned off my Alexa and smart plugs, and the crackling stopped.
If you’re still stuck, try this tool called "Ground Hum Eliminator." It’s a bit pricey, but it works like magic for unblocked static.
If you’re still stuck, try this tool called "Ground Hum Eliminator." It’s a bit pricey, but it works like magic for unblocked static.