I had recently purchased an older Porsche. It came with a very nice higher end stereo that was not at all feature rich by todays standards (No aux, BT, USB). As I needed to replace the original optically cabled amp I had to replace it but was concerns about unknowledgeable people working on my baby. A quick conversation with George demonstrated he had the exact car specific knowledge I needed. I just got the car back and the new stereo rocks. Thanks Guys.