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Open-back over-ear planar headphones in silver finish

HiFiMAN

HiFiMAN HE400SE Stealth Magnets Version High Sensitivity Comfortable Sliver headphone

SKU CH-9CXC-B1431

Open-back planar magnetic headphones with Stealth Magnet technology for reduced distortion, supplied with a 3.5mm cable and 6.35mm adapter

  • TypeHeadphone
  • Planar magnetic drivers deliver low-distortion sound across the full frequency range
  • Stealth Magnet shape lets sound waves pass without interference for purer audio
  • Open-back over-ear design creates a spacious stereo image suited to critical listening
  • High sensitivity ensures strong output from portable sources and studio gear alike
  • Dual-sided 3.5 mm cable with 6.35 mm adapter connects to a wide range of devices

Planar magnetic open-back headphone

The HiFiMAN HE400SE is a full-size wired headphone that uses planar magnetic drivers with Stealth Magnet technology to lower distortion across the frequency range. Its open-back design delivers an airy stereo presentation suited to critical listening in quiet rooms.

Listeners who want detailed sound without

Audiophiles and studio users who value accuracy and comfort will appreciate the high sensitivity and lightweight build. Buyers who need noise isolation for commuting or recording in loud spaces should consider a closed-back alternative.

Dual 3.5 mm cable with 6.35 mm adapter included

The package supplies a dual-sided high-performance 3.5 mm cable and a 6.35 mm adapter for direct connection to most headphone outputs. Users whose source only offers balanced 4-pin XLR or other proprietary connectors will need a different cable.

Highlights

  • Planar magnetic drivers deliver low-distortion sound across the full frequency range
  • Stealth Magnet shape lets sound waves pass without interference for purer audio
  • Open-back over-ear design creates a spacious stereo image suited to critical listening
  • High sensitivity ensures strong output from portable sources and studio gear alike
  • Dual-sided 3.5 mm cable with 6.35 mm adapter connects to a wide range of devices

Specifications

TypeHeadphone

Questions about this item

How do I connect the HE400SE's 3.5 mm cable and when do I need the 6.35 mm adapter?

Plug the dual-sided 3.5 mm cable into the left and right cups, then insert the 3.5 mm plug into a portable source; use the supplied 6.35 mm adapter when connecting to studio gear or a desktop amp with a quarter-inch jack.

Which parts of the HE400SE are most likely to wear out and need replacement?

The detachable 3.5 mm cable and the ear pads are the primary consumables; cables can fatigue from repeated bending and pads compress over time, both are user-replaceable.

At what point does the open-back design become the limiting factor during long listening sessions?

Sound leaks out of the open-back cups almost immediately, so the practical limit in shared spaces is reached as soon as the volume disturbs others or outside noise masks quiet passages.

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