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Thread: Headphones with different impedances

  1. #1
    Join Date: Feb 2010

    Location: Moved to frozen north, beyond Inverness

    Posts: 2,602
    I'm Dave.

    Default Headphones with different impedances

    I just noticed this https://www.amazon.co.uk/beyerdynami...rds=headphones

    This appears to be an offer for essentially the same headphone set, but in a choice of different impedances.

    I've never seen headphones of the same type offered with different impedances before - though maybe I've not been looking.

    Is there a best impedance to use? Also, if buying with other kit - such as a headphone amplifier - is there an impedance which is a best match?
    Presumably if one already has kit one matches to that, but if there's a completely blank slate, what then?
    Dave

  2. #2
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 6,869
    I'm Lawrence.

    Default

    When using an OTL headphone amp (eg little dot 3/4) it's generally best to go for the highest impedance as this minimises the power loss across the "internal impedance" and valves are better at voltage than current in the P=VI equation. Sorry if that's not strictly technically correct but it's how I think about it.

    Conversely solid state can struggle with very high impedance headphones and you're better off with the 50-100 ohms range depending on the output impedance of the amp. Please correct me if I'm wrong her.

    Sent from my BLN-L21 using Tapatalk

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