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Audio-Technica Ad500x vs HiFiMAN HE 400i Ver.2020: which should you buy?

On aggregated review scores the HiFiMAN HE 400i Ver.2020 comes out ahead with an HearWiki score of 82. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: HiFiMAN HE 400i Ver.2020 - Great overall at around $169.

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Audio-Technica Ad500x
Sound7.5
Value8.0
HiFiMAN HE 400i Ver.2020
Sound8.5
Value9.0

Specifications

Specification comparison of Audio-Technica Ad500x vs HiFiMAN HE 400i Ver.2020
SpecAudio-Technica Ad500xHiFiMAN HE 400i Ver.2020
TypeOver-EarOver-Ear
Price (USD)$85$169
HearWiki score72 / 100 · Good82 / 100 · Great
Released-2020
Audio
Driverdynamicplanar
Driver size53 mm70 mm
Drivers per side11
Frequency response5 - 25,000 Hz20Hz-35kHz
Impedance48 Ω35 Ω
Sensitivity100 dB/mW93 dB/mW
Wireless
Bluetoothnone-
Multipoint pairingNoNo
Battery
Wireless chargingNo-
Features
Active noise cancellingNoNo
ANC typenone-
Transparency modeNo-
Companion appNo-
Custom EQNo-
Wear detectionNo-
Controlsnonenone
Design
Weight235 g370 g
Water resistancenone-
Detachable cable-Yes
USB-CNoNo
Balanced connection-Yes

What reviewers said

Audio-Technica Ad500x

The Audio-Technica AD500X is an open-back, over-ear headphone that prioritizes comfort and a natural, airy sound. Its self-adjusting wing system and lightweight frame make it easy to wear for long sessions, while the 53mm drivers deliver a clear, detailed presentation with a notably wide soundstage. It's a wired-only model, so it's best suited for home listening setups.

  • Pro:Very comfortable, pressure-free fit
  • Pro:Spacious, open soundstage
  • Pro:Clear and detailed treble
  • Con:No wireless or Bluetooth connectivity
  • Con:No included cable or accessories
  • Con:Open-back design leaks sound

HiFiMAN HE 400i Ver.2020

The HiFiMAN HE 400i Ver.2020 is an open-back planar headphone that delivers impressive clarity and speed for its budget-friendly price. While its neutral tuning may benefit from EQ for some listeners, it offers solid comfort and strong overall value in the sub-$200 range. Its main limitations include lighter bass response and an open design that lacks isolation.

  • Pro:Fast, resolving planar sound with good detail
  • Pro:Comfortable fit for extended listening sessions
  • Pro:Excellent value for the price
  • Con:Tuning can sound sharp on bright tracks
  • Con:Bass is lighter compared to some rivals
  • Con:No carrying case included

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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