Why is Solo 4 better than HDR 275?
Solo 4 has no measurable advantages in this pair.
Why is HDR 275 better than Solo 4?
HDR 275 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | On-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | — |
| Lowest frequency | — | 6 Hz |
| Highest frequency | — | 20,000 Hz |
| Sensitivity | — | 106 dB |
| Spatial / 3D audio | Yes | — |
| Head tracking | Yes | — |
| Hi-Res Audio | Yes | Yes |
| Noise control | ||
| Active noise cancelling | No | No |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 50 h | 50 h |
| Quick charge (claimed) | 10 min → 5 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.4 |
| Bluetooth codecs | — | aptX Adaptive, AAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | Yes |
| LDAC | — | No |
| USB-C | Yes | — |
| USB audio | Yes | — |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Weight | 217 g | — |
| Colours | — | Black |
| Features | ||
| Hands-free calls | Yes | — |
