Why is HD 620S better than ACE?
- Driver size42 mm vs 40 mm+5%
Why is ACE better than HD 620S?
- Active noise cancellingNo · HD 620S: Yes
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | — |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Driver size | 42 mm | 40 mm |
| Lowest frequency | 6 Hz | — |
| Highest frequency | 30,000 Hz | — |
| Impedance | 150 Ω | 24 Ω |
| Sensitivity | 110 dB | — |
| Spatial / 3D audio | — | Yes |
| Head tracking | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | — | 30 h |
| Battery life with ANC | — | 30 h |
| Battery capacity | — | 1,060 mAh |
| Charging time | — | 3 h |
| Quick charge (claimed) | — | 3 min → 3 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | No | Yes |
| Bluetooth version | — | 5.4 |
| Bluetooth codecs | — | aptX Lossless |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | Yes |
| LDAC | — | No |
| Multipoint (two devices) | — | Yes |
| USB-C | — | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 312 g |
| Foldable | — | Yes |
| Colours | Black | — |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
