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HIFIMAN HE400i Single-Ended Planar Magnetic Headphones

Model: HE-400I

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Specifications

Packaging Info

Package Weight 4.4 lb
Box Dimensions (LxWxH) 12.4 x 10.4 x 7.0"

General Information

Impedance 35 ohms
Cable Length 4.9' (1.5 m)
Frequency Response 20 Hz to 35 KHz
Weight 13.1 oz (370 g)
Plug 3.5 mm / 6.35 mm
Sensitivity 93 dB
Expert Reviews
Techpowerup.32823287
5 March 2015
9.9/10

The HE-400i is hard not to like. It is an incredibly good all-around headphone with the unique bass performance we have come to love planar magnetics for. The HE-400i isn't overly bright, which I find to be a gift for especially longer listening sessions; there is simply no fatigue here.

  • +

    Amazing texture representation throughout, Insanely detailed midrange, Bass is well-tuned, Not bloated but prominent bass, Great highs, Good linearity throughout, Good cable

  • -

    Still somewhat pricey!

Cnet.33586669
10 November 2014
8.3/10

If you've always wanted to own a pair of high-end "audiophile" headphones but can't quite justify dropping a grand on a pair, the superb sounding HiFiMan HE-400i is a good compromise.

  • +

    The HiFiMan HE-400i is a large, full-size headphone that uses planar-magnetic drivers for exceptional sound quality highlighted by first-rate clarity, detail and well-defined bass. The headphone is also lighter and more comfortable than its predecessor.

  • -

    Headphone cord may be too short for some people; fairly pricey; open-back design leaks sound.

Sound vision magazine.32823271
25 February 2015
8.2/10

The non-fatiguing sound of the HiFiMan HE-400i will have you falling in love with your music all over again.

  • +

    Very musical, Great resolution, Tank build quality

  • -

    Needs more than an iPhone to drive good volume

Review head fi org.34136598
16 November 2014
10/10

I've been trying to write a review of these headphones since September 13th, but I've been completely stuck. Simply put, I'm almost embarrassed by how much I love these headphones, and I find myself unable to write what I consider a critical assessment.

  • +

    price, performance, weight, sensitivity, sound quality

  • -

    Vocals slightly thick, the cable is short and stiff.

User Reviews
9 February 2016
10/10

The HE-400i is my first set of planar magnetic headphones. Compared to similarly priced dynamic headphones, these sound fuller and larger, yet not quite as alive and detailed. The highs are silky and never harsh.

  • +

    rich & full sound, comfortable

  • -

    needs an amplifier for best results

Product Highlights
  • Circumaural Open-Back Design
  • Single-Sided Planar Magnetic Drivers
  • Frequency Response: 20 Hz - 35 kHz
  • Impedance: 35 ohms
  • Detachable Cable
8.6/10
Average Expert Score
8.8/10
Average User Score
In The Box
  • HIFIMAN HE400i Single-Ended Planar Magnetic Headphones
  • 1/4" Adapter
  • Leatherette Presentation Case
  • Limited 1-Year Warranty
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