Dimensions
Size comparison
bel-sonoMuo
| bel-sono | Muo | Difference | |
|---|---|---|---|
| Height | 100 mm | 216 mm | −116 mm |
| Width | 220 mm | 82 mm | +138 mm |
| Depth | 90 mm | 59 mm | +31 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is bel-sono better than Muo?
bel-sono has no measurable advantages in this pair.
Why is Muo better than bel-sono?
- Output power10 W vs 40 W4×
- Battery life16 h vs 24 h+50%
Specifications
Side by side
| Sound | ||
| Output power | 10 W | 40 W |
| Speaker channels | 2.0 | — |
| Channel count | 2 | — |
| Lowest frequency | — | 43 Hz |
| Highest frequency | — | 20,000 Hz |
| Hi-Res Audio | — | Yes |
| Stereo | Yes | — |
| Battery & charging | ||
| Battery life | 16 h | 24 h |
| Charging time | 4 h | — |
| Mains powered | No | — |
| Battery powered (portable) | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | — | 5.4 |
| Bluetooth codecs | SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| USB-C | Yes | — |
| USB audio | — | Yes |
| Optical input | Yes | — |
| Design & build | ||
| Weight | 717 g | — |
| Width | 220 mm | 82 mm |
| Height | 100 mm | 216 mm |
| Depth | 90 mm | 59 mm |
| Protection rating | — | IP67 |
| Water resistance (IPx) | — | IPx7 |
| Dust protection (IP) | — | 6 |
| Colours | Grey | — |
| Features | ||
| Hands-free calls | — | Yes |
| Party / stereo pairing | Yes | Yes |









