vs
9.2Noise control & calls6.5
6.3Battery7.2
Why is LIVE 660NC better than Live 670NC?
- Charging time2 h vs 3 h+50%
- Lowest frequency16 Hz vs 20 Hz+25%
Why is Live 670NC better than LIVE 660NC?
- Battery life50 h vs 65 h+30%
- Battery life with ANC40 h vs 50 h+25%
- Weight265 g vs 219 g+21%
- Bluetooth version5 vs 5.3+6%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | On-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | 40 mm |
| Lowest frequency | 16 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | 32 Ω |
| Sensitivity | 97 dB | 98 dB |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Microphones | — | 2 |
| Battery & charging | ||
| Battery life | 50 h | 65 h |
| Battery life with ANC | 40 h | 50 h |
| Battery capacity | 750 mAh | — |
| Charging time | 2 h | 3 h |
| Quick charge (claimed) | 5 min → 1 h | 5 min → 1 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 5.3 |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Smart & streaming | ||
| Voice assistant | Alexa, Google Assistant | Alexa |
| Companion app | Yes | — |
| Design & build | ||
| Weight | 265 g | 219 g |
| Foldable | — | Yes |
| Features | ||
| Hands-free calls | — | Yes |
