vs
3.0Noise control & calls9.3
2.8Battery4.3
Why is Amiron Zero better than FreeBuds Pro 4?
- Bluetooth version5.4 vs 5.2+4%
Why is FreeBuds Pro 4 better than Amiron Zero?
- Active noise cancellingNo · Amiron Zero: Yes
- Hi-res codec (LDAC / aptX HD / LHDC)No · Amiron Zero: Yes
- Battery life6 h vs 7 h+17%
- Total with charging case20 h vs 33 h+65%
- Highest frequency20,000 Hz vs 48,000 Hz2.4×
- LDACNo · Amiron Zero: Yes
- Lowest frequency20 Hz vs 14 Hz+43%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Open-back | Closed-back |
| Driver type | — | Planar magnetic |
| Driver size | — | 11 mm |
| Number of drivers | — | 2 |
| Lowest frequency | 20 Hz | 14 Hz |
| Highest frequency | 20,000 Hz | 48,000 Hz |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Battery & charging | ||
| Battery life | 6 h | 7 h |
| Battery life with ANC | — | 5 h |
| Total with charging case | 20 h | 33 h |
| Battery capacity | — | 55 mAh |
| Charging time | — | 2.5 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.2 |
| Bluetooth codecs | AAC, SBC | LDAC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | Yes |
| aptX | No | No |
| LDAC | No | Yes |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | 6 g | — |
| Protection rating | IP54 | IP54 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | 5 | 5 |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | — |
