vs
7.8Noise control & calls5.8
5.2Battery6.4
Why is QuietComfort Ultra Headphones (2nd Gen) better than Fidelio L4?
- aptXYes · Fidelio L4: No
Why is Fidelio L4 better than QuietComfort Ultra Headphones (2nd Gen)?
- Battery life45 h vs 50 h+11%
- LDACNo · QuietComfort Ultra Headphones (2nd Gen): Yes
- Charging time3 h vs 2 h+50%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 40 mm |
| Lowest frequency | — | 7 Hz |
| Highest frequency | — | 40,000 Hz |
| Impedance | — | 16 Ω |
| Sensitivity | — | 99 dB |
| Spatial / 3D audio | Yes | — |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | Yes | Yes |
| Microphones | — | 2 |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 45 h | 50 h |
| Battery life with ANC | — | 40 h |
| Battery capacity | — | 800 mAh |
| Charging time | 3 h | 2 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | aptX Adaptive, SBC | LDAC, LC3, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | Yes | No |
| LDAC | No | Yes |
| Multipoint (two devices) | Yes | Yes |
| LE Audio | — | Yes |
| USB-C | Yes | — |
| 3.5 mm jack / AUX | Yes | Yes |
| Smart & streaming | ||
| Voice assistant | — | Google Assistant |
| Companion app | Yes | — |
| Design & build | ||
| Weight | 264 g | — |
| Foldable | Yes | — |
| Colours | — | Black |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
