Any time I try to plug something into my stereo's auxiliary input that is being power by an inverter it ads a loud buzzing sound to the audio. I notice it mainly when I try to use my laptop. Without the laptop being plugged in, it makes no noise at all. As soon as I plug it into an inverter though, the noise starts. I think it is some sort of feedback because after a few seconds of being plugged in it will automatically turn off the factory inverter. Is there some sort of in-line filter I need to add?