Back in the days, car audio systems were simple, as opposed to the monstrous devices of today that challenge you to make a choice between casual and catchy. Some few years back, once your car audio system could play a cassette and sound off with a radio, you were satisfied. MP3s and CDs are now the rave of the moment. Upgrading your car audio system does not necessarily mean discarding everything it already has. Although outdated, speakers from the old car audio systems can still be used with more modern CD units.
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