What is this?
Just picked up a used 2011 A4 and saw this hanging from inside the trunk. I have no idea what it is. Any and all help will be appreciated. Is my car missing something that the original owner kept?
Last edited by yellowdog74; Aug 5, 2012 at 10:52 AM.
That's an audio signal attenuator that would be used with an aftermarket amplifier. It isn't original to the car. The manufacturer says:
So perhaps the previous owner had added an amplifier to boost the power to speakers.
SNI-15 converts 10 to 30 watts per channel speaker level output into a pre-amp signal. Perfect when adding an amplifier to a factory or aftermarket radio. Great for getting an additional set of pre-amps outputs from a head unit equipped with only one set.


