True Wireless
Sennheiser CX 400BT
68Good
$202
Full review dataSennheiser CX 400BT vs Sony WF-1000XM6: which should you buy?
On aggregated review scores the Sony WF-1000XM6 comes out ahead with an HearWiki score of 88. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Sony WF-1000XM6 - Outstanding overall at around $298.
True Wireless
Sony WF-1000XM6
88Outstanding
$298
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Sennheiser CX 400BT
Sound7.5
Battery6.5
Calls7.0
Value7.0
Sony WF-1000XM6
Sound9.0
Noise cancelling9.0
Battery8.0
Calls8.0
Value7.0
Specifications
| Spec | Sennheiser CX 400BT | Sony WF-1000XM6 |
|---|---|---|
| Type | True Wireless | True Wireless |
| Price (USD) | $202 | $298 |
| HearWiki score | 68 / 100 · Good | 88 / 100 · Outstanding |
| Released | 2021 | 2026 |
| Audio | ||
| Driver | dynamic | dynamic |
| Driver type | - | custom driver |
| Driver size | 7 mm | 8.4 mm |
| Drivers per side | 2 | 2 |
| Frequency response | 5Hz-21kHz | 20Hz-20kHz |
| Impedance | 28 Ω | - |
| Sensitivity | 107 dB/mW | - |
| Wireless | ||
| Bluetooth | 5.x | 5.3 |
| Bluetooth version | 5.1 | 5.3 |
| Codecs | SBC, AAC, aptX | SBC, AAC, LDAC, LC3 |
| Multipoint pairing | No | Yes |
| Wireless range | - | 10 m |
| Battery | ||
| Battery life | 7 h | 12 h |
| Battery life (ANC on) | - | 8 h |
| Battery incl. case | 20 h | 24 h |
| Full charge time | 90 min | 90 min |
| Quick charge | 10 min = 1 h | 3 min = 1 h |
| Wireless charging | No | Yes |
| Features | ||
| Active noise cancelling | No | Yes |
| ANC type | - | adaptive |
| Transparency mode | - | Yes |
| Companion app | - | Yes |
| Custom EQ | - | Yes |
| Wear detection | - | Yes |
| Controls | - | touch |
| Voice assistant | - | Google Assistant, Alexa, Siri |
| Design | ||
| Weight | 6 g | 6.4 g |
| Case weight | 37 g | 47 g |
| Water resistance | none | IPX4 |
| USB-C | Yes | Yes |
| Calls | ||
| Microphones | 2 | 8 |
| Microphone | - | Yes |
What reviewers said
Sennheiser CX 400BT
The Sennheiser CX 400BT true wireless earbuds deliver impressive audio quality with a warm, balanced sound signature, making them a strong choice for music lovers. They offer solid battery life and reliable call performance, though their design is somewhat bulky and they lack modern conveniences like active noise cancellation and auto-pause. At a reduced price, they represent good value, but they face stiff competition from newer models with more features.
- Pro:Excellent, warm sound quality
- Pro:Good battery life
- Pro:Reliable call performance
- Con:Bulky design
- Con:No active noise cancellation
- Con:Lacks auto-pause and transparency mode
Sony WF-1000XM6
The Sony WF-1000XM6 true wireless earbuds deliver a top-tier audio experience with adaptive noise cancellation and robust sound quality, making them a strong all-around choice for daily use and workouts. They feature a long battery life, LDAC support, and multipoint connectivity, though their premium price and slightly bulky case are minor trade-offs. Overall, they excel in most areas, with call clarity and customization options further boosting their appeal.
- Pro:Excellent adaptive noise cancellation
- Pro:Rich, detailed sound with LDAC support
- Pro:Long battery life even with ANC on
- Con:Premium price point may deter budget buyers
- Con:Charging case is somewhat larger than rivals
- Con:Stock ear tips might not fit all ear shapes
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.