I Have had this car for about a month and love it. I bought it used from my neighbor who owns a dealer across the street. I have been fixing some of the minor issues it has but before I begin, I am curious if model has an amplifier or if it is integrated into the head unit. It is the 6 CD changer with sync and no navigation. Also, it is the 4 speaker system. My passenger front door speaker is not working. I hope it is a wire or something stupid, even if I had to replace the speaker, it wouldn't be a big deal. I do like the factory head unit because of the USB, Sirius, and the 6 Disk Changer and it doesn't sound bad at all. I am also good at repairing electronics if the amp is bad. I don't want to tear into the wiring blind, and want to keep the factory system if I can.