vs
9.2Noise control & calls5.9
4.9Battery9.4
Why is QuietComfort Ultra (2nd Gen) better than STAX Spirit S5?
- Active noise cancellingYes · STAX Spirit S5: No
Why is STAX Spirit S5 better than QuietComfort Ultra (2nd Gen)?
- Battery life30 h vs 80 h2.7×
- Hi-res codec (LDAC / aptX HD / LHDC)No · QuietComfort Ultra (2nd Gen): Yes
- Charging time3 h vs 1.5 h2×
- aptXNo · QuietComfort Ultra (2nd Gen): Yes
- LDACNo · QuietComfort Ultra (2nd Gen): Yes
- Battery capacity850 mAh vs 1,500 mAh+76%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | Planar magnetic |
| Driver size | — | 89 mm |
| Lowest frequency | — | 10 Hz |
| Highest frequency | — | 40,000 Hz |
| Impedance | — | 24 Ω |
| Sensitivity | — | 94 dB |
| Spatial / 3D audio | Yes | — |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 30 h | 80 h |
| Battery capacity | 850 mAh | 1,500 mAh |
| Charging time | 3 h | 1.5 h |
| Quick charge (claimed) | 15 min → 2,5 h | 10 min → 11 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | AAC, SBC | LDAC, aptX Adaptive, aptX HD, aptX, LHDC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | Yes |
| aptX | No | Yes |
| LDAC | No | Yes |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Smart & streaming | ||
| Voice assistant | Siri | — |
| Companion app | Yes | Yes |
| Design & build | ||
| Weight | — | 347 g |
| Colours | — | Black |
| Features | ||
| Hands-free calls | Yes | Yes |
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