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Articles & Videos: Sound Processors for Factory Radios

Factory sound processors take your factory stereo's music signal, clean it up, and send a corrected audio signal to your aftermarket amps and subwoofers.

Video: Upgrading Your Factory Stereo, part 2
by Robert Ferency-Viars, Ken Nail

In this short video, Crutchfield experts show how a fellow employee created a high-performance car audio system without replacing his vehicle's factory stereo.

Upgrade your car's sound
by Buck Pomerantz

Factory stereo systems leave a lot to be desired. The four upgrade systems we discuss in this article improve the factory sound of different vehicles in different ways.

A Rockford Fosgate system gave the family minivan a major audio overhaul while still keeping the manufacturer's dual DVD players intact for the kids.

Adding a sub to your factory stereo is a great way to improve your sound without giving up your familiar factory controls. Follow along with our expert in this video.

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