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HIFIMAN HE400se Open-Back Planar Headphone

HE400se is a classic favorite rite with a modern twist! With a sensitivity of 91dB be sure to pair it with one of our high-performance amplifiers like the HeadAmp GS-X mini or Gilmore Lite MK2 to hear this headphones at it’s best!

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“The HE400 series has been an award winning audio industry favorite for over 10 years!”

Our Take

Hifiman’s HE400se is a global exclusive not available in main-land China. It uses an exclusive Stealth Magnet Design alongside a special silver copper cable! Both of these features are exclusive and unique to this global model!

Acoustically Invisible

Hifiman’s brand new Stealth Magnet reduces wave diffraction turbulence and lowers distortion to barely audible levels. The unique shape of the magnets enable sound to pass through them without generating interference. Thus making this advanced magnet structure acoustically invisible which yields a pure accurate full-range sonic output.

Maximum Comfort for Hours of Pleasurable Listening

HE400se features an all new adjustable lightweight headband design. It keeps cool and comfortable even in warm weather. The drivers are now protected by a newly designed casing for enhanced durability.

Durable Connectors

HE400se features a dual sided high-performance dual 3.5mm headphone side detachable cable and comes with a 6.3mm adapter for maximum device compatibility!

What's Included

• HIFIMAN HE400se headphone

• Headphone Cable Terminated to 3.5mm with 1/4" adapter

• HIFIMAN HE400se product booklet


• Weight: 390g

• Sensitivity: 91dB

• Impedance: 25 ohms

• Frequency Response: 20Hz - 20kHz



HIFIMAN is a world leader in planar magnetic and electrostatic headphones. They have a knack for hitting the sweet spot in crystal clear sound and value with headphones like the Sundara and Arya.