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FiiO JN3 vs Sennheiser HD 400: which should you buy?

Specs, scores and condensed review verdicts for the FiiO JN3 vs Sennheiser HD 400, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.

Score breakdown

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

Sennheiser HD 400 leads on 3 of 4 measures.

  • FiiO JN3
  • Sennheiser HD 400
HearWiki score
-
82
Sound
-
8.5
Value
-
8.0
Price (USD)
$39
$77

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

Same generation

These are the same generation of hardware - nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price.

  • JN32026
  • HD 400Year unknown

Level on: USB-C.

Specifications

JN3HD 400
Type
Over-Ear
Over-Ear
Price (USD)
$39
$77
HearWiki score
Not scored
82
Released
2026
-
Driver
-
40 mm dynamic
Driver type
-
dynamic
Driver size
-
40 mm
Drivers per side
-
1
Frequency response
-
18 Hz - 20 kHz
Impedance
-
120 Ω
Bluetooth
5.3
-
Multipoint pairing
-
No
Wireless charging
-
No
Active noise cancelling
Yes
No
Transparency mode
Yes
-
Controls
-
buttons
Voice assistant
Yes
-
Weight
-
240 g
Water resistance
-
none
Foldable
Yes
-
USB-C
Yes
Yes
Connector
USB-C
-
Microphones
1
1
Microphone type
MEMS
-
Call noise reduction
Yes
-

What reviewers said

FiiO JN3

No summary yet - we haven't aggregated enough reviews.

Sennheiser HD 400

These over-ear Sennheiser headphones are built around a neutral, open-back design aimed at studio work, delivering a wide soundstage and detailed, transparent audio for critical listening. They are lightweight and comfortable for long sessions, with a high-impedance driver setup that helps maintain low distortion, though they lack isolation and come without a carry case. Wired connectivity via USB-C and detachable cables adds versatility, but the open-back nature means sound leaks both ways.

  • Pro:Accurate, transparent sound with wide soundstage
  • Pro:Lightweight and comfortable for extended wear
  • Pro:Detachable cables and USB-C connectivity
  • Con:No included carry case or spare ear pads
  • Con:Open-back design leaks sound and offers no isolation
  • Con:High impedance may require a dedicated amplifier for best results

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

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