Why is RS2X better than HDB 630?
- Weight240 g vs 311 g+30%
- Driver size44 mm vs 42 mm+5%
Why is HDB 630 better than RS2X?
- Active noise cancellingNo · RS2X: Yes
- Lowest frequency14 Hz vs 6 Hz2.3×
- Highest frequency28,000 Hz vs 40,000 Hz+43%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | Open-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 44 mm | 42 mm |
| Lowest frequency | 14 Hz | 6 Hz |
| Highest frequency | 28,000 Hz | 40,000 Hz |
| Impedance | 38 Ω | 480 Ω |
| Sensitivity | 99 dB | 105 dB |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | — | 60 h |
| Battery life with ANC | — | 60 h |
| Battery capacity | — | 630 mAh |
| Charging time | — | 2 h |
| Quick charge (claimed) | — | 10 min → 7 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | No | Yes |
| Bluetooth version | — | 5.2 |
| Bluetooth codecs | — | aptX Adaptive, aptX HD, aptX, AAC, SBC |
| 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 |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | 240 g | 311 g |
| Foldable | — | Yes |
| Colours | Black, Brown | Lunar Silver, Black |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
