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HIFIMAN

HIFIMAN HE400se Open-Back Planar Headphones

HIFIMAN HE400se Open-Back Planar Headphones

  • Authorized Retailer
  • Free US Shipping $49+
  • 1-Year Warranty
  • 45-Day Returns
$69.99 USD
$69.99 USD
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The HIFIMAN HE400se is an open-back planar magnetic headphone in the bilateral magnet version, aimed at Hi-Fi listening and monitoring. It's the model that put planar magnetic sound within reach for most people, and it still holds that spot.

Open-back means no isolation — plan on a quiet room, and expect anyone nearby to hear your music. In exchange you get the airy, spacious presentation open planars are known for. Planars generally reward a proper amplifier, so if you're pairing these with a phone dongle, budget for a desktop amp or a capable portable unit as your next step.

  • Planar magnetic drivers, bilateral magnet version
  • Open-back design for Hi-Fi and monitoring use
  • Benefits from a dedicated headphone amplifier

Authorized HIFIMAN retailer. Free US shipping over $49, 45-day returns, 1-year warranty.

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Good to know

Frequently asked questions

Is this unit genuine?

Yes. TonePier is an authorized retailer — every unit comes from the brand or its official distributor, carries a valid serial number and is covered by the full manufacturer warranty.

How long does shipping take?

SKUs stocked in our US warehouse ship within 1–2 business days. Items shipped direct from our China hub typically arrive in 8–15 days with full tracking. The product page tells you which applies before you order.

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.