Solid car audio installer! Hands on trouble shooting, great vendor relationships to help ease any glitches.This shop can install car audio in a sub compact, to a freight truck's cab due to its interior bay,and exterior back lot to fit the latter.Alpine was introduced to me at Advanced, and what a head unit,cannot be more pleased.The GPS is accurate,even out in the country side where other head unit's GPS failed miserably.Dealing with an authorized car audio dealer is essential to your post sale experience because it's after you drop the cash where you want to avoid buyers' remorse.Answering their phone with courtesy told me I needed to give these guys a shot,especially when my questions were actually answered.When the guy on the phone didn't have an answer, he TOLD me he would look into it versus issuing a useless standard B.S.response.