Hifiman HE-400i (2020) Planar Magnetic Headphones
PRODUCT
Hifiman HE400i/HE400i (Ver. 2020) Planar Magnetic Open-Back Headphones
Hifiman HE-400i (2020 Version)


DESCRIPTIONS
The HIFIMAN HE-400i is a high quality, full-size planar magnetic headphone designed for critical listening in the home or studio. At little more than twelve ounces, HE-400i is 30% lighter allowing the listener to comfortably enjoy music for hours on end. In addition, a newly-designed headband and beveled hybrid ear pads provide added comfort and improved sound quality. Its increased efficiency of 93dB allows it to be driven with a modest size amplifier or portable audio player.
Using single-ended drivers, the HE400i delivers a lively sound stage and spatial imaging. |
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Lively - Agile Using single-ended drivers, the HE400i delivers a lively sound stage and spatial imaging. Increased efficiency of 93dB allows the HE400i to be driven with a modest size amplifier, portable audio player, or computer. The HE-400i also sounds great on tablets and smartphones but will not offer full volume on portable devices without a portable amplifier. |
Headphone Specifications:
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HE-400i Product Updates (2018)
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A premium cable is included comprised of Crystalline metal with Oxygen-free copper and silver. |
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Crystalline Metal 3.5mm CableA premium cable is included comprised of Crystalline metal with Oxygen-free copper and silver.
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Newly-designed Headband
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Velour / Leatherette EarcupsAt little more than twelve ounces, HE-400i is 30% lighter than comparable planar magnetic headphones allowing the listener to comfortably enjoy music for hours on end. In addition, a newly-designed headband and beveled hybrid ear pads provide added comfort as well as improved sound quality. |
SPECIFICATIONS
Frequency Response: | 20Hz-35KHz |
Sensitivity : | 93dB |
Impedance : | 35 Ohms |
Weight : | 370g |
Cable Length : | 1.5m |
Plug : | 3.5mm/6.35mm |
IN THE BOX

Credits to https://www.rtings.com/headphones/reviews/hifiman/he-400i
- HiFiMan HE-400i Headphones
- 1/8" to 1/4" adapter
- Audio cable
- Manual
- 1 Year Limited Warranty (T&C applies, warranty excludes human factor damage)