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HIFIMAN HE400i Single-Ended Planar Magnetic Headphones


Designed for both home use and critical listening in the studio, the HE400i Single-Ended Planar Headphones from HIFIMANare equipped with single-ended full-size planar-magnetic drivers that provide an accurate response and wide spatial imaging. The large planar-magnetic drivers are designed to provide excellent transient response and sound quality.

  • Easy-to-drive single-ended planar magnetic driver for critical listening at home or in the studio
  • Planar magnetic technology provides accurate transient response and sound quality
  • Sensitivity of 93 dB allows the headphone to be driven with a modest-size amplifier or used with smartphones and portable audio players
  • ABS polymer ear cups in a gloss charcoal finish
  • Pressure pattern designed to provide comfort
  • Beveled earpads made of pleather and velour also provide comfort and high sound quality
  • Quick response time due to lightweight diaphragm design
  • Detachable cable that attaches using 2.5mm connectors
  • 1.5m cable with 1/8" connector, includes 1/4" adapter


  • Frequency Response: 20 Hz to 35 KHz
  • Sensitivity: 93 dB
  • Impedance: 35 ohms
  • Cable Length: 4.9' (1.5 m)
  • Plug: 3.5 mm / 6.35 mm
  • Weight: 13.1 oz (370 g)


Packaging Info

  • Package Weight: 4.4 lb
  • Box Dimensions (LxWxH): 12.4 x 10.4 x 7.0"

In The Box

  • HIFIMAN HE400i Single-Ended Planar Magnetic Headphones
  • 1/4" Adapter
  • Leatherette Presentation Case
  • Limited 1-Year Warranty
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