Over-Ear
1MORE SonoFlow Pro HQ51
78Great
$81
Full review data1MORE SonoFlow Pro HQ51 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.
1MORE SonoFlow Pro HQ51
Sound7.5
Noise cancelling7.0
Battery9.5
Calls6.5
Value8.5
Sennheiser HD 400
Sound8.5
Value8.0
Specifications
| Spec | 1MORE SonoFlow Pro HQ51 | Sennheiser HD 400 |
|---|---|---|
| Type | Over-Ear | Over-Ear |
| Price (USD) | $81 | $77 |
| HearWiki score | 78 / 100 · Great | 82 / 100 · Great |
| Released | 2025 | - |
| Audio | ||
| Driver | dynamic | 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 | 98 dB/mW | - |
| Wireless | ||
| Bluetooth | LDAC | - |
| Bluetooth version | 5.4 | - |
| Codecs | SBC, AAC, LDAC | - |
| Multipoint pairing | Yes | No |
| Wireless range | 10 m | - |
| Battery | ||
| Battery life | 100 h | - |
| Battery life (ANC on) | 65 h | - |
| Full charge time | 80 min | - |
| Quick charge | 5 min = 10 h | - |
| Wireless charging | No | No |
| Features | ||
| Active noise cancelling | Yes | No |
| ANC type | hybrid | - |
| Transparency mode | Yes | - |
| Companion app | Yes | - |
| Custom EQ | Yes | - |
| Controls | buttons | buttons |
| Design | ||
| Weight | 246 g | 240 g |
| Water resistance | none | none |
| USB-C | Yes | Yes |
| Calls | ||
| Microphones | - | 1 |
What reviewers said
1MORE SonoFlow Pro HQ51
The 1MORE SonoFlow Pro HQ51 are over-ear wireless headphones that offer a compelling mix of features for their modest price. They combine hybrid active noise cancellation with an exceptionally long battery life, especially when ANC is turned off, and support high-quality LDAC Bluetooth streaming. While the build feels a bit basic, their clear sound with strong bass, effective ANC, and marathon runtime make them a standout value option.
- Pro:Exceptional battery life, up to 100 hours without ANC
- Pro:Effective hybrid noise cancellation and transparency mode
- Pro:Supports LDAC for high-resolution wireless audio
- Con:Plastic build doesn't feel premium
- Con:No water resistance rating
- Con:Controls are limited to physical buttons
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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