Over-Ear
Mpow H21
68Good
$80
Full review dataMpow H21 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.
Mpow H21
Sound6.5
Noise cancelling6.0
Battery8.0
Calls5.5
Value7.5
Sennheiser HD 400
Sound8.5
Value8.0
Specifications
| Spec | Mpow H21 | Sennheiser HD 400 |
|---|---|---|
| Type | Over-Ear | Over-Ear |
| Price (USD) | $80 | $77 |
| HearWiki score | 68 / 100 · Good | 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-20kHz | 18Hz-20kHz |
| Impedance | 32 Ω | 120 Ω |
| Sensitivity | 118 dB/mW | - |
| Wireless | ||
| Bluetooth | 5.0 | - |
| Bluetooth version | 5.0 | - |
| Codecs | AAC | - |
| Multipoint pairing | Yes | No |
| Battery | ||
| Battery life | 65 h | - |
| Full charge time | 180 min | - |
| Wireless charging | No | No |
| Features | ||
| Active noise cancelling | Yes | No |
| ANC type | hybrid | - |
| Transparency mode | No | - |
| Companion app | No | - |
| Custom EQ | No | - |
| Wear detection | No | - |
| Controls | buttons | buttons |
| Design | ||
| Weight | 395 g | 240 g |
| Water resistance | none | none |
| USB-C | No | Yes |
| Calls | ||
| Microphones | 2 | 1 |
| Call noise reduction | CVC 6.0 | - |
What reviewers said
Mpow H21
The Mpow H21 is a budget-friendly over-ear headphone that prioritizes comfort and long battery life, offering up to 65 hours of playback. It includes hybrid active noise cancellation and Bluetooth 5.0 with multipoint support, making it a practical choice for value-focused listeners, though it lacks premium features like transparency mode or app customization.
- Pro:Very comfortable for extended wear
- Pro:Excellent battery life at up to 65 hours
- Pro:Hybrid ANC effective for the price
- Con:No transparency mode for ambient awareness
- Con:Limited to AAC codec, no aptX or LDAC
- Con:No app support or custom EQ
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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