vs
9.2Noise control & calls6.9
6.3Battery6.6
2.6Connectivity2.6
Why is LIVE 660NC better than REAL Blue 2021?
- Weight265 g vs 280 g+6%
- Battery capacity750 mAh vs 700 mAh+7%
Why is REAL Blue 2021 better than LIVE 660NC?
- Battery life50 h vs 55 h+10%
- Battery life with ANC40 h vs 41 h+2%
- Lowest frequency16 Hz vs 10 Hz+60%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | 40 mm |
| Number of drivers | — | 1 |
| Lowest frequency | 16 Hz | 10 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | 18 Ω |
| Sensitivity | 97 dB | 102 dB |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | — | Yes |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 50 h | 55 h |
| Battery life with ANC | 40 h | 41 h |
| Battery capacity | 750 mAh | 700 mAh |
| Charging time | 2 h | — |
| Quick charge (claimed) | 5 min → 1 h | — |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 5 |
| Bluetooth codecs | — | aptX, AAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | Yes |
| LDAC | — | No |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Smart & streaming | ||
| Voice assistant | Alexa, Google Assistant | — |
| Companion app | Yes | Yes |
| Design & build | ||
| Weight | 265 g | 280 g |
| Foldable | — | Yes |
