Why is Q30i better than Q31i?
Q30i has no measurable advantages in this pair.
Why is Q31i better than Q30i?
- Hi-res codec (LDAC / aptX HD / LHDC)No · Q30i: Yes
- LDACNo · Q30i: Yes
- Bluetooth version5.3 vs 6+13%
Specifications
Side by side
| Sound | ||
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | 40 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 40,000 Hz | 40,000 Hz |
| Impedance | 16 Ω | 16 Ω |
| Hi-Res Audio | Yes | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | Yes | Yes |
| Battery & charging | ||
| Battery life | 80 h | 80 h |
| Battery life with ANC | 50 h | — |
| Charging time | 2 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 6 |
| 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 | Yes |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Design & build | ||
| Weight | 263 g | 267 g |
| Foldable | — | Yes |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
