Why is SRH840A better than Space Q45?
- Lowest frequency5 Hz vs 20 Hz4×
- Weight273 g vs 295 g+8%
- Highest frequency25,000 Hz vs 20,000 Hz+25%
Why is Space Q45 better than SRH840A?
- Active noise cancellingNo · SRH840A: Yes
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | 40 mm |
| Lowest frequency | 5 Hz | 20 Hz |
| Highest frequency | 25,000 Hz | 20,000 Hz |
| Impedance | 40 Ω | 16 Ω |
| Sensitivity | 97 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 | — | 65 h |
| Battery life with ANC | — | 50 h |
| Charging time | — | 5 h |
| Quick charge (claimed) | — | 5 min → 4 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | No | Yes |
| Bluetooth version | — | 5.3 |
| Bluetooth codecs | — | LDAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | No |
| LDAC | — | Yes |
| Multipoint (two devices) | — | Yes |
| USB-C | — | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | 273 g | 295 g |
| Foldable | — | Yes |
| Colours | Black | Black, Blue, White |
| Features | ||
| Hands-free calls | — | Yes |
