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Message: <blockquote data-quote="2theMaxx21" data-source="post: 122647" data-attributes="member: 546337">A line driver increases your input voltage. The higher your input voltage, the lower you will be able to set your amp's gain controls. The lower you can keep your gain controls, the cleaner your sound will be. Because amps induce more noise when you crank up the gain.If you're using a line driver, it doesn't really matter which headunit you use, either way it can't put out any more than 9 volts. But with a headunit that puts out 5 volts, I wouldn't even use a line driver. The more electronics that you have in your signal line (i.e. equalizers, line drivers, etc.) the more noise that will be induced into your signal. Keep it clean and simple. A 5 volt signal is more than high enough to be able to keep your amps gains set low.</blockquote>

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