Why is H9 better than M-271 DB?
- Active noise cancellingYes · M-271 DB: No
- Battery life75 h vs 65 h+15%
- Driver size40 mm vs 32 mm+25%
Why is M-271 DB better than H9?
M-271 DB has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | On-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | 32 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Sensitivity | — | 107 dB |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Battery & charging | ||
| Battery life | 75 h | 65 h |
| Battery life with ANC | 45 h | — |
| Charging time | — | 5 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| USB-C | Yes | — |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Weight | — | 109 g |
| Features | ||
| Hands-free calls | — | Yes |
