JC Power Audio Shop at 1800 East Valley Parkway, Escondido, California.

I've been to over 15 different car audio places and this place is the ultimate bang for your buck. not a lot of high end brands but certainly a lot of decent mid-tier tech that in very well priced. The installation is extremely professional and quick, plus if you ever have questions the guys always respond with great detail. They even did some work on my car for free which will make me go back again. I highly recommend these guys over anyone else.