My $50 estimate is quite high by the way. A few more reasons why Sony users may want to try this. It will reduce the load of the CD-changer on the ciruit you radio is on since the CD-changer derives power from the head unit. Personally, I have noticed a great deal of heat from the head unit resulting from this. If you do own a CD-changer, you could sell it and then buy this adapter to return a little profit for yourself. Space can be saved by taking out a CD-changer, who knows what goodies you could put in it's place? If you don't have a CD-changer, what a deal compared to how much they cost right now; new or used. This seems like a efficient, sleek way to design an audio system in your car if you have the components like Sony head units and and Empeg. A simple solution to a complex problem.