vs
4.0Noise control & calls6.1
6.5Battery2.3
Why is RS 275 better than Crusher 720?
- Battery life50 h vs 4 h12.5×
- Weight195 g vs 363 g+86%
- Lowest frequency6 Hz vs 20 Hz3.3×
- Charging time2 h vs 3 h+50%
Why is Crusher 720 better than RS 275?
Crusher 720 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | On-ear | Over-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | — |
| Driver size | — | 10 mm |
| Number of drivers | — | 4 |
| Lowest frequency | 6 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | — | 36 Ω |
| Sensitivity | 106 dB | 110 dB |
| Spatial / 3D audio | Yes | Yes |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | No | No |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 50 h | 4 h |
| Battery capacity | — | 65 mAh |
| Charging time | 2 h | 3 h |
| Quick charge (claimed) | — | 10 min → 4 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | aptX Adaptive, AAC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | Yes | — |
| LDAC | No | — |
| Multipoint (two devices) | — | Yes |
| LE Audio | Yes | Yes |
| Auracast | Yes | Yes |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | 195 g | 363 g |
| Foldable | Yes | — |
| Colours | Black | Future, True Black, Primer, Cement, Plasma |
| Features | ||
| Hands-free calls | Yes | — |
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