vs
9.2Noise control & calls6.7
4.9Battery3.7
Why is QuietComfort Ultra (2nd Gen) better than Px7 S3?
QuietComfort Ultra (2nd Gen) has no measurable advantages in this pair.
Why is Px7 S3 better than QuietComfort Ultra (2nd Gen)?
- Hi-res codec (LDAC / aptX HD / LHDC)No · QuietComfort Ultra (2nd Gen): Yes
- aptXNo · QuietComfort Ultra (2nd Gen): Yes
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 |
| Spatial / 3D audio | Yes | — |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | — | Yes |
| Microphones | — | 8 |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 30 h | 30 h |
| Battery life with ANC | — | 30 h |
| Battery capacity | 850 mAh | — |
| Charging time | 3 h | — |
| Quick charge (claimed) | 15 min → 2,5 h | 15 min → 7 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | AAC, SBC | aptX Lossless, aptX Adaptive, aptX HD, aptX, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | Yes |
| aptX | No | Yes |
| LDAC | No | No |
| 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 | — | 300 g |
| Foldable | — | Yes |
| Features | ||
| Hands-free calls | Yes | Yes |
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