Why is QS20 better than FVA51K?
QS20 has no measurable advantages in this pair.
Why is FVA51K better than QS20?
FVA51K has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Driver size | 43 mm | — |
| Output power | 6 W | — |
| Lowest frequency | 87 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Battery & charging | ||
| Battery life | — | 6 h |
| Battery capacity | — | 2,000 mAh |
| Mains powered | — | No |
| Battery powered (portable) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 6 | — |
| Bluetooth codecs | SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| USB-C | — | Yes |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Weight | 327 g | — |
| Protection rating | — | IP67 |
| Water resistance (IPx) | — | IPx7 |
| Dust protection (IP) | — | 6 |
| Colours | — | Black |
