Made specifically for vehicles equipped with factory amplifiers, our new speaker level matching circuit provides clean consistent power, reduces interference and minimizes radiated noise while ensuring crystal-clear sound even at high volumes.  Designed for select Audi, GM and Lincoln vehicles, the ACC-PAD1 offers a plug-and-play, hassle-free installation when paired with any of our Maestro SR, RR, or RR2 interface modules.  Simply connect it to a compatible Maestro T-harness and you are good to go.