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    kylej's Avatar
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    2v Preamp vs 4v Preamp

    My head unit (Alpine CDA-105) only has a 2v preamp output for some reason. Alpine cheaped out there I suppose. Does the 4v really make that much difference in quality?







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    Re: 2v Preamp vs 4v Preamp

    its definately a difference, i like running at least 5v preouts personally.



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    Re: 2v Preamp vs 4v Preamp

    Quote Originally Posted by destined2race View Post
    its definately a difference, i like running at least 5v preouts personally.
    eclipse ftw brotha.


    "Don't worry about the pre-out voltage, and simply set the gains correctly for the amplifier on hand.

    The more important spec on pre-out (IMO) is the output impedance - the lower the better. The output impedance is more important because it determines how much noise rejection the output devices are capable of maintaining (rather than noise masking, as a higher RCA voltage does).

    The Pioneer head units (typically) offer neither high voltage OR low impedance outputs, this in addition to the noisy and relatively poorly designed ground plane within the units, makes them very susceptible to noise right off the bat. Proper HU grounding is VERY important with Pioneer heads. If really THAT worried about it, get a different (i.e. better) head unit."

    RCA output voltage, nouseforaname



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    Re: 2v Preamp vs 4v Preamp

    not a huge difference if its a quality headunit




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    Re: 2v Preamp vs 4v Preamp

    higher voltage is usually better but just make sure whatever voltage you go with, your amp has at least a minimum of that




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    Re: 2v Preamp vs 4v Preamp

    all higher voltage outputs do is change how low the amp gain is going to be set to as compared to a lower voltage output.



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    Re: 2v Preamp vs 4v Preamp

    I can tell ya a 2v Denon has better sq than an 8v eclipse.



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    Re: 2v Preamp vs 4v Preamp

    Quote Originally Posted by kylej View Post
    My head unit (Alpine CDA-105) only has a 2v preamp output for some reason. Alpine cheaped out there I suppose.
    Your CDA-105 is entry level from Alpine. That's what you get from any Tier 1 manufacturer's low end models. 2V outputs are not as important as having enough pre-outs for your system. If the 105 does what you need then you're fine.




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    Re: 2v Preamp vs 4v Preamp

    No, it will make no difference to you.




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