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HiFiMAN HE 400S Planar Magnetic Headphone

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One of the highest efficiency planar phones in the world! HIFIMAN’s newest HE400S sounds terrific on your smartphone or most any portable audio device.


  • HE 400 S delivers all the lifelike clarity, detail, extended bass and wide sound stage that audiophiles have come to expect from HIFIMAN.
  • Innovative headband and specially designed ear pads for remarkable comfort allowing you to enjoy your music for hours on end due to the lightweight design of only 350 grams.
  • The 400S is a planar magnetic headphone that significantly lowers distortion versus traditional dynamic drivers. 


  • Frequency Response : 20Hz - 35kHz
  • Sensitivity : 98dB
  • Impedance : 22 ohms
  • Weight : 12.3 Oz (350 grams)
  • Cable Length: 1.5m (5 ft)
  • Connector Type: 3.5mm (1/8")
  • Manufacturer Warranty: 1 year
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