Bring modern tech to your classic ride with a 1984 Cadillac Eldorado radio upgrade by Speed of Sound Audio Experts in Somersworth, NH. This classic car audio restoration adds Apple CarPlay, Bluetooth connectivity, and DB Drive speakers for rich sound and seamless functionality. Enjoy the best of both worlds—retro car styling with a modern radio upgrade that delivers crystal-clear audio and smart features for your vintage Cadillac.