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<blockquote data-quote="Prowler573" data-source="post: 1022991" data-attributes="member: 561023">Amplifiers, very simply, amplify (increase the strength of) the audio signal input to them.Do you need one? That depends. If the only car audio upgrade you have made is to replace an OEM stereo with an aftermarket one while still using the factory speakers an amplifier would most likely not be that worthwhile of an investment.However, if you have replaced the stock speakers with quality aftermarket drivers and/or plan on using a subwoofer to provide a solid bassline then an outboard amplifier will make the aftermarket speakers and/or subwoofer(s) perform much better than attempting to power them with the stereo&#039;s internal amplifier.Edit: Powering some aftermarket coaxial speakers or a component set can be done - but in most instances an outboard amplifier will make them perform dramatically better.Please do not try to power a subwoofer with the head unit. Ever.</blockquote>

[QUOTE="Prowler573, post: 1022991, member: 561023"] Amplifiers, very simply, amplify (increase the strength of) the audio signal input to them. Do you need one? That depends. If the only car audio upgrade you have made is to replace an OEM stereo with an aftermarket one while still using the factory speakers an amplifier would most likely not be that worthwhile of an investment. However, if you have replaced the stock speakers with quality aftermarket drivers and/or plan on using a subwoofer to provide a solid bassline then an outboard amplifier will make the aftermarket speakers and/or subwoofer(s) perform much better than attempting to power them with the stereo's internal amplifier. Edit: Powering some aftermarket coaxial speakers or a component set can be done - but in most instances an outboard amplifier will make them perform dramatically better. Please do not try to power a subwoofer with the head unit. Ever. [/QUOTE]

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