What could cause an issue like this? I'd like to get some gurus to provide some possible scenarios if possible. I've heard it comes from the head unit. Other people have said its because the amp is not turning off before the radio. What can I do to remedy it?

 

iv always had this noise when i turn my head unit on. I always thought its because my gain is so high. So when it gets sudden power. May also be interference from headunit.

 

wtf r u talking about

 

run your power lead down one side of the car and your rca cables down the other side and move your ignition source turn on lead to a different fuse location.

 

What he said! ^