Over-Ear
OneOdio Focus A6
68Good
$70
Full review dataOneOdio Focus A6 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 Focus A6
Sound6.5
Noise cancelling6.0
Battery8.5
Value7.5
Sennheiser HD 400
Sound8.5
Value8.0
Specifications
| Spec | OneOdio Focus A6 | Sennheiser HD 400 |
|---|---|---|
| Type | Over-Ear | Over-Ear |
| Price (USD) | $70 | $77 |
| HearWiki score | 68 / 100 · Good | 82 / 100 · Great |
| Released | 2025 | - |
| Audio | ||
| Driver | dynamic | Sennheiser dynamic drivers |
| Driver size | 40 mm | 40 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 20-20000 Hz | 18Hz-20kHz |
| Impedance | 32 Ω | 120 Ω |
| Wireless | ||
| Bluetooth | 6 | - |
| Bluetooth version | 6.0 | - |
| Codecs | SBC, AAC, LDAC | - |
| Multipoint pairing | Yes | No |
| Battery | ||
| Battery life | 75 h | - |
| Battery life (ANC on) | 40 h | - |
| Full charge time | 90 min | - |
| Quick charge | 10 min = 10 h | - |
| Wireless charging | No | No |
| Features | ||
| Active noise cancelling | - | No |
| ANC type | hybrid | - |
| Transparency mode | Yes | - |
| Companion app | No | - |
| Custom EQ | No | - |
| Wear detection | No | - |
| Controls | buttons | buttons |
| Voice assistant | yes | - |
| Design | ||
| Weight | 240 g | 240 g |
| Water resistance | - | none |
| USB-C | Yes | Yes |
| Calls | ||
| Microphones | 5 | 1 |
| Call noise reduction | ENC | - |
What reviewers said
OneOdio Focus A6
The OneOdio Focus A6 is an affordable wireless over-ear headphone that pairs hybrid active noise cancellation with an impressively long battery life, reaching up to 75 hours without ANC and 40 hours with it. Its lightweight 240g build and Bluetooth 6 support with multipoint make it a practical daily choice, though it lacks app-based customization and custom EQ. The inclusion of LDAC and a quick-charge feature adds value at its budget price point.
- Pro:Exceptional battery life, especially with ANC off
- Pro:Supports LDAC for high-quality wireless audio
- Pro:Lightweight and comfortable for extended wear
- Con:No app support or custom EQ options
- Con:No wear detection for auto-pause
- 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.
Compare something else
Swap either side out, or start again from the picker.