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Factory System Upgrades
These packages use sophisticated processing to improve the sound quality of your factory audio system.
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Add an iPod to Your Factory Radio
These iPod adapters let you listen to your iPod through your vehicle's factory radio.
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Add an Auxiliary Input to Your Radio
These adapters convert the changer port on your factory radio to an auxiliary input.
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Add Sources to Your Factory Radio
These factory system expansion controllers allow you to add audio sources to your factory radio.
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Use a Phone with Your Factory Radio
These T-harnesses plug into your factory radio harness, connecting your factory radio to a Parrot Bluetooth cell phone kit.
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Factory Sound Processors
These processors shape the output of your factory radio to get maximum performance from aftermarket amplifiers.
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Custom-fit Subwoofers
A custom-fit sub fits into a convenient spot in your specific vehicle, for great bass without losing space.
Charting the Decline of Factory Speakers Factory speakers usually sound fine when they're new, but they deteriorate over time. We compared speakers of different ages to see how badly they fare.
12 Tips for Getting the Best Sound Quality in Your CarYour car can be a great place for music listening. Many commuters suffer for hours each day with inferior sound quality that they'd never tolerate from their systems at home. Here are some tips on how to improve sound quality in your vehicle, whether you're listening on a simple factory system or a...
Video: Upgrading Your Factory Stereo, part 2Just because you can't replace your vehicle's factory stereo doesn't mean you have to live with a poor sound system. In this short video, Crutchfield experts take a look at how a fellow employee created a high-performance car audio system.