Why is HDR 275 better than RS 275?
HDR 275 has no measurable advantages in this pair.
Why is RS 275 better than HDR 275?
RS 275 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | On-ear | On-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Lowest frequency | 6 Hz | 6 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Sensitivity | 106 dB | 106 dB |
| Spatial / 3D audio | — | Yes |
| Hi-Res Audio | Yes | Yes |
| Noise control | ||
| Active noise cancelling | No | No |
| Battery & charging | ||
| Battery life | 50 h | 50 h |
| Charging time | — | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | aptX Adaptive, AAC | aptX Adaptive, AAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | Yes | Yes |
| LDAC | No | No |
| LE Audio | — | Yes |
| Auracast | — | Yes |
| USB-C | — | Yes |
| Design & build | ||
| Weight | — | 195 g |
| Foldable | — | Yes |
| Colours | Black | Black |
| Features | ||
| Hands-free calls | — | Yes |
