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8.8Noise control & calls3.0
Why is Air 2 NC better than STAX Spirit S3?
- Active noise cancellingYes · STAX Spirit S3: No
- LDACYes · STAX Spirit S3: No
Why is STAX Spirit S3 better than Air 2 NC?
- Battery capacity40 mAh vs 1,500 mAh37.5×
- aptXNo · Air 2 NC: Yes
Specifications
Side by side
| Sound | ||
| Fit | In-ear | — |
| Driver size | — | 89 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 40,000 Hz |
| Impedance | — | 24 Ω |
| Sensitivity | — | 94 dB |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | — | 80 h |
| Total with charging case | 40 h | — |
| Battery capacity | 40 mAh | 1,500 mAh |
| Charging time | 1.5 h | 1.5 h |
| Quick charge (claimed) | — | 10 min → 11 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.2 |
| Bluetooth codecs | LDAC, SBC | aptX Adaptive, aptX, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | No | Yes |
| LDAC | Yes | No |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | — |
| 3.5 mm jack / AUX | — | Yes |
| Low-latency game mode | Yes | — |
| Design & build | ||
| Colours | — | Black |
| Features | ||
| Hands-free calls | — | Yes |
