So I recently noticed that when I listen to my music in my car I get a really high pitched whine.
No matter if the volume goes up or down the whine stays the same. If I kill the source it keeps up for a brief few seconds afterwards then goes away.
I know its coming from the amps and I believe its the dreaded ground loop issue.
So I was told to get a ground loop isolator for one set of RCA pre-puts on my Cd player.
My question is are they all created equal or are there some specific ones I should get, or stay away from.
Thanks in advance