more personal experience here, i got my alpine deck n coustic amp all hooke dup for about 6 months with NO interference problems whatsoever, the other day i isntall a TV screen n xbox into my car, i have ALL the wires running on the passenger side of the car, including the power on wire for the amp, i used basic AV cables for the TV n sound and i get interference when im playing the xbox the same interference your having that goes with the engine revs, but i swithc to play an mp3 direct form the head unit and there's no interference, so im guessing that coz i bundled the wires right next to the battery thats the problem, or perhaps thye are cheapo AV cables, coz my RCAs for the head unit are stinger RCAs, so my question is, where can i buy proper quality AV cables ? like the red white n yellow ones that wont get nterference ?