10-05-2007, 12:54 PM
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#12
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Join Date: Mar 2004
Location: Little Elm, Texas
Vehicle: VW GTi VR6 / Ducati 900 SS & S4R / Dakota R/T Supercharged
Posts: 13,294
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They are essentially pre-amps.
There are a few options out there.
http://www.mp3car.com/vbulletin/car-...r-options.html
Might help you decide.
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