Did you install this device at the amplifier or at the head?
This was installed at the head.

I'm glad Rhino's problem is improved, but I'm very dubious about RCA filters. If his music contains a thump, will he be able to hear it now?
I've had no music troubles, although the stuff I listen to isn't really that "thumpy" to begin with. I don't want to give the impression that this is the ultimate solution to your noise troubles. This is not an exact science, and every car is different. It just worked for me. It was a shot in the dark, and because of this, I made sure that I could return the noise filters to Radio Shack if they didn't work for me. I'd say it's worth a try if other things have not worked.


Rhino
MKII 20GB Amber