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6.8Noise control & calls3.9
Why is Tune 680NC better than HD 400U?
- Active noise cancellingYes · HD 400U: No
Why is HD 400U better than Tune 680NC?
- Lowest frequency20 Hz vs 18 Hz+11%
Specifications
Side by side
| Sound | ||
| Fit | On-ear | Over-ear |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Driver size | 32 mm | — |
| Lowest frequency | 20 Hz | 18 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | 18 Ω |
| Sensitivity | 98 dB | 120 dB |
| Spatial / 3D audio | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Microphones | 2 | — |
| Battery & charging | ||
| Battery life | 76 h | — |
| Battery capacity | 680 mAh | — |
| Charging time | 2 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 6 | — |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | — | Yes |
| Smart & streaming | ||
| Companion app | Yes | — |
| Design & build | ||
| Weight | 158 g | — |
| Foldable | Yes | — |
| Features | ||
| Hands-free calls | Yes | — |
