Now in its fourth decade of operation, Sound Decisions specializes in upgrading rides with audio, video, navigation, and security systems from brands including Alpine, Kenwood, Rockford Fosgate, Pioneer and JL Audio. The shop's trademark pink mailbox flags down drivers to check out the showroom, where stereo faceplates, sound-punching amplifiers, and trunk-rattling speakers line the walls. During appointments, five full-time installers answer customer questions and fit vehicles with accessories, even going a step beyond the practical with cosmetic upgrades including internal ambient lighting, undercarriage LED lighting, and front-grill teeth whitening.