There really isnt anything other than prices that is good about quality auto sound. The sale people dont know much about the products they sell. I would say that I know more about car audio than the sales people. Dont let them install anything. I bought some speakers from them and had them install them. I got home and they didnt work. After bringing the car back to them they couldnt find the problem. I brought it home and checked myself and found they didnt connect the wires. Stay away from quality auto sound.