The HIFIMAN HE400se is an open-back planar magnetic headphone, supplied here in its bilateral magnet version, for Hi-Fi listening and monitoring in a quiet room. It's a first step into open-back planar sound for home listeners who are ready to pair it with a proper headphone amplifier.
Who the HIFIMAN HE400se is for
First-time planar buyers: It's a first taste of open-back planar sound for home listening in a quiet room.
Hi-Fi listening and monitoring: Aimed at Hi-Fi listening and monitoring, the open-back planar design gives the airy, spacious presentation open planars are known for.
Listeners adding an amp: A budget desktop DAC/amp or a stronger portable dongle brings out that spacious presentation, where a phone alone may sound quiet and flat.
Gamers with a room to themselves: Fast transients and an open-back stage make footstep placement and positional cues easy to track; add a desktop or clip-on mic, since it has none.
Skip it if: you need a headphone for commuting or an office; the open back offers no isolation and leaks sound to people nearby.
Recommended. Planar magnetic headphones generally reward a proper amplifier; a phone alone may sound quiet and flat. A budget desktop DAC/amp or a stronger portable dongle brings out the spacious presentation these are known for.
Who should buy the HE400se — and who shouldn't?
Buy it if you want your first taste of open-back planar sound for home listening in a quiet room. Skip it for commuting or offices: the open-back design offers no isolation and leaks sound to people nearby.
Does it come with warranty?
Yes. It ships as genuine brand-new stock with a 1-year TonePier warranty, 45-day returns, and free shipping.
Genuine HIFIMAN stock. Free shipping on every order, 45-day returns, 1-year warranty.
HIFIMAN HE400se vs similar options
vs HiFiMAN HE400se Stealth: Same HE400se open-back planar, but in HIFIMAN's Stealth Magnet version, with magnets shaped to reduce acoustic reflections and rated 32 Ω and 91 dB; the one on this page uses bilateral magnets.
vs FiiO FT1: A closed-back 60mm dynamic that a phone dongle can run (32Ω, 98dB/mW) and that isolates; pick the HE400se for open-back planar spaciousness in a quiet room with a proper amp.
Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.
Where does my order ship from, and how long does it take?
Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.
What if it isn't for me?
You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.
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