safety

  1. xnor

    Safe listening levels and headphone voltage/power requirements

    Heya, there's a couple of threads asking about safe listening levels and people asking about voltage/power requirements in almost any amp/headphone thread. Here's my take on this: Noise Exposure Limits The EPA and WHO recommend that noise should be kept below 70 dBA over 24 hours and below 75...
    • xnor
    • Thread
    • headphone amplification headphones hearing damage power safety spl voltage
    • Replies: 80
    • Forum: General Audio Discussions
  2. Dilettante

    >48v on passive Fet preamp

    Say there is a device that supplies ~54v of phantom power instead of the conventional 48v. If one plugs Cloudlifter, FetHead, etc. into the chain, can these be damaged by the excess voltage?
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