I contact Autobahn to get a pair of subs and amp installed and connected to my factory radio. I had some idea what needed to be done and the guys at Autobahn made some great suggestions about parts and installing that made this even better. They made me a part of the process asking my thoughts on locations of amp, remote gain, etc. Instead of other shops that would just take you keys and throw the speakers in, Autobahn makes you a part of the process.