vs
4.2Noise control & calls4.9
Why is Rail ANC better than Liberty 4 NC?
Rail ANC has no measurable advantages in this pair.
Why is Liberty 4 NC better than Rail ANC?
- Total with charging case38 h vs 50 h+32%
- Driver size6 mm vs 11 mm+83%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | Dynamic |
| Driver size | 6 mm | 11 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | — | 10 Ω |
| Sensitivity | 100 dB | — |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | No | No |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | — | Yes |
| Microphones | — | 6 |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | — | 10 h |
| Total with charging case | 38 h | 50 h |
| Charging time | — | 3 h |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.3 |
| Bluetooth codecs | — | LDAC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | No |
| LDAC | — | Yes |
| Multipoint (two devices) | Yes | Yes |
| USB-C | — | Yes |
| Design & build | ||
| Earbud weight (each) | — | 5.2 g |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Colours | — | Velvet Black, Clear White, Navy Blue, Pastel Pink, Light Blue |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | Yes | Yes |
