Over-Ear
OneOdio A71
58Average
$41
Full review dataOneOdio A71 vs Sennheiser HD 400: which should you buy?
On aggregated review scores the Sennheiser HD 400 comes out ahead with an HearWiki score of 82. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Sennheiser HD 400 - Great overall at around $77.
Over-Ear
Sennheiser HD 400
82Great
$77
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
OneOdio A71
Sound6.0
Noise cancelling1.0
Value6.0
Sennheiser HD 400
Sound8.5
Value8.0
Specifications
| Spec | OneOdio A71 | Sennheiser HD 400 |
|---|---|---|
| Type | Over-Ear | Over-Ear |
| Price (USD) | $41 | $77 |
| HearWiki score | 58 / 100 · Average | 82 / 100 · Great |
| Released | 2021 | - |
| Audio | ||
| Driver | 40mm | Sennheiser dynamic drivers |
| Driver size | 40 mm | 40 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 20Hz-40kHz | 18Hz-20kHz |
| Impedance | 32 Ω | 120 Ω |
| Sensitivity | 110 dB/mW | - |
| Wireless | ||
| Multipoint pairing | No | No |
| Battery | ||
| Wireless charging | No | No |
| Features | ||
| Active noise cancelling | No | No |
| ANC type | none | - |
| Transparency mode | No | - |
| Companion app | No | - |
| Custom EQ | No | - |
| Wear detection | No | - |
| Controls | buttons | buttons |
| Voice assistant | none | - |
| Design | ||
| Weight | 290 g | 240 g |
| Water resistance | - | none |
| USB-C | No | Yes |
| Calls | ||
| Microphones | 1 | 1 |
What reviewers said
OneOdio A71
The OneOdio A71 is a wallet-friendly over-ear headset aimed at casual listening and basic studio use, offering dual-size jack connectivity and a share-port for collaborative listening. While the sound and comfort get a pass for the low price, the plastic build, lack of modern features like ANC or app support, and weak isolation keep it from impressing.
- Pro:Very affordable price point
- Pro:Includes both 3.5mm and 6.35mm jacks
- Pro:Comfortable for extended wear
- Con:Build quality feels flimsy
- Con:No active noise cancellation or app support
- Con:Sound isolation is weak
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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