vs
3.0Noise control & calls7.2
2.8Battery7.1
3.7Build & features4.8
Why is Amiron Zero better than AH-C840NCW?
Amiron Zero has no measurable advantages in this pair.
Why is AH-C840NCW better than Amiron Zero?
- Active noise cancellingNo · Amiron Zero: Yes
- Battery life6 h vs 10 h+67%
- Earbud weight (each)6 g vs 5 g+20%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Open-back | Closed-back |
| Driver type | — | Dynamic |
| Driver size | — | 12 mm |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 6 h | 10 h |
| Battery life with ANC | — | 7 h |
| Total with charging case | 20 h | — |
| Charging time | — | 2 h |
| Fast charging support | Yes | — |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | AAC, SBC | LC3, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| Multipoint (two devices) | — | Yes |
| LE Audio | — | Yes |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | 6 g | 5 g |
| Protection rating | IP54 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | 5 | — |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
