vs
7.9Noise control & calls3.9
Why is LIVE 680NC better than HD 400U?
- Active noise cancellingYes · HD 400U: No
- Highest frequency40,000 Hz vs 20,000 Hz2×
- Lowest frequency10 Hz vs 18 Hz+80%
Why is HD 400U better than LIVE 680NC?
HD 400U has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | — | Over-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | — |
| Lowest frequency | 10 Hz | 18 Hz |
| Highest frequency | 40,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | 18 Ω |
| Sensitivity | 98 dB | 120 dB |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 80 h | — |
| Battery life with ANC | 50 h | — |
| Charging time | 2 h | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 6 | — |
| Bluetooth codecs | LDAC, LC3, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | No | — |
| LDAC | Yes | — |
| Multipoint (two devices) | Yes | — |
| LE Audio | Yes | — |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Design & build | ||
| Weight | 231 g | — |
| Foldable | Yes | — |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | — |
