Why is HE-R9 better than Aonic 40?
- Highest frequency35,000 Hz vs 20,000 Hz+75%
- Lowest frequency15 Hz vs 20 Hz+33%
Why is Aonic 40 better than HE-R9?
- Active noise cancellingNo · HE-R9: Yes
- Weight460 g vs 319 g+44%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Driver size | — | 40 mm |
| Number of drivers | — | 1 |
| Lowest frequency | 15 Hz | 20 Hz |
| Highest frequency | 35,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | 31 Ω |
| Sensitivity | 100 dB | — |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | — | 25 h |
| Connectivity | ||
| Wireless | No | Yes |
| Bluetooth version | — | 5 |
| Bluetooth codecs | — | aptX HD, aptX, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | Yes |
| LDAC | — | No |
| 3.5 mm jack / AUX | Yes | Yes |
| Design & build | ||
| Weight | 460 g | 319 g |
| Colours | Brown, Black, Red | — |
