.....and, unless the car amp that is now receiving 12 volts DC from the converter, has a cut for the top of the stereo OR mono full-range signals, WeirdNater, you'll need to use the sub-out of the receiver and apply LFE-cut, and you probably don't have a cut on a car amp.....Mtry, you were doing so well, and then just quit....ain't you tryin' for Audioholic Of The Month?.....