Over-Ear
OneOdio Fusion A70 Gen 2
68Good
$60
Full review dataOneOdio Fusion A70 Gen 2 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 Fusion A70 Gen 2
Sound6.5
Noise cancelling6.0
Battery8.5
Calls6.0
Value7.5
Sennheiser HD 400
Sound8.5
Value8.0
Specifications
| Spec | OneOdio Fusion A70 Gen 2 | Sennheiser HD 400 |
|---|---|---|
| Type | Over-Ear | Over-Ear |
| Price (USD) | $60 | $77 |
| HearWiki score | 68 / 100 · Good | 82 / 100 · Great |
| Released | 2026 | - |
| Audio | ||
| Driver | dynamic | Sennheiser dynamic drivers |
| Driver size | 40 mm | 40 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 20 Hz - 40,000 Hz | 18Hz-20kHz |
| Impedance | 32 Ω | 120 Ω |
| Sensitivity | 112 dB/mW | - |
| Wireless | ||
| Bluetooth | 6 | - |
| Bluetooth version | 6.0 | - |
| Codecs | LDAC, LDHC, AAC | - |
| Multipoint pairing | Yes | No |
| Battery | ||
| Battery life | 72 h | - |
| Full charge time | 120 min | - |
| Wireless charging | No | No |
| Features | ||
| Active noise cancelling | - | No |
| Companion app | Yes | - |
| Custom EQ | Yes | - |
| Controls | buttons | buttons |
| Design | ||
| Weight | 242 g | 240 g |
| Water resistance | none | none |
| Foldable | Yes | - |
| Detachable cable | Yes | - |
| USB-C | Yes | Yes |
| Calls | ||
| Microphones | - | 1 |
What reviewers said
OneOdio Fusion A70 Gen 2
These over-ear wireless headphones offer a solid mix of features for the price, including active noise cancellation, a massive 72-hour battery, and support for high-quality Bluetooth codecs like LDAC. The comfortable, foldable design and wired option make them versatile for travel or home use, though they lack water resistance.
- Pro:Exceptional battery life
- Pro:Supports high-res LDAC and LDHC codecs
- Pro:Foldable design with detachable cable
- Con:No water resistance rating
- Con:No wireless charging support
- Con:Two-hour charge time is on the longer side
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.