SAN DIEGO AND EL CAJON Stereo Depot has 3 different locations in San Diego and El Cajon. If you need the best car stereo system and car audio, come to Stereo Depot! We have the very best Stereo brands at affordable prices. We beat any price you can find on all stereo and other services, and offer free stereo installation. We also offer car window tinting, car video, car alarms and theft prevention, car GPS navigation systems, marine audio, wheels and tires, HID lights and more! If you are ready to take your car, truck, offroading vehicle or boat to the next level come to Stereo Depot in San Diego or El Cajon.