Headphone Impedance

Discussion in 'Microphones & Recording' started by doubleJ, Sep 7, 2006.

  1. doubleJ

    doubleJ Active Member

    Joined:
    Jan 30, 2005
    Location:
    Branson, MO
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    I'm looking at the akg 240, sennheiser 280, and koss pro4aa headphones. Most of the studio people that I know have experience with the akg and like them, but say that they are quiet and should have a headphone amp pushing them. They were saying that it has a high impedance (I think). From what the specs say, it's 55 ohms. The Senn is 64 ohms and the koss is 250 ohms.
    I was never good with impedance and power amps, except that I know you can half it and double your output, or something like that.
    I will just be hooking the headset up to the phones out on an audio interface. Would it be better to use one of the lower-number ones? Did akg change something to where they are louder now?
    BTW...
    The only real reason I'm looking at the koss is because of the lifetime warranty. I think that's a very cool thing. I also like that they are made in america and not malaysia or something.
    JJ
     
  2. TVPostSound

    TVPostSound Member

    Joined:
    Feb 15, 2006
    The AKG 240 comes in 2 flavors of impedance.

    The 240M is 600 ohm, the 240 Studio is 55 ohms.

    If your headphone amp is +4 not -10, then use the 240 S.
    A home stereo headphone jack will do better with the 240 M.

    I have blown many 240Ms, but never a 240S.

    The Sennheiser 280 sound the best, but get a little uncomfortable
    over a long day.

    I cant speak for Koss, as I have noexperience with them.
     
  3. doubleJ

    doubleJ Active Member

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    Jan 30, 2005
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    Branson, MO
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    I have an M-Audio OmniStudio Usb and I don't see a +4/-10 setting, but the manual says...
    Also, the line-level i/o's have switches to select +4/-10.
    JJ
     
  4. mpd

    mpd Guest

    I currently have a pair of AKG 271 and Senn HD280, and previously owned a pair of AKG 240M (until they melted in the trunk of my car).

    Of the three, the AKG 240M is my favorite. When I bought them there was only one style, so I can't comment on the newer low-impedance version.

    Keep in mind that the AKG 240 is a semi-open design, and the HD280 is a closed design. The HD280 isolate very well, but can be a little tiring after extended use.
     
  5. doubleJ

    doubleJ Active Member

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    Jan 30, 2005
    Location:
    Branson, MO
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    I think the isolation is good, for my use. I have 3 kids, a wife, and no soundproof room.
    *sigh*
    JJ
     

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