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Why is alphatronicsSound S40 Mobile DAB better than SR-B20A?
alphatronicsSound S40 Mobile DAB has no measurable advantages in this pair.
Why is SR-B20A better than alphatronicsSound S40 Mobile DAB?
- SubwooferNone vs Optional (sold separately)
Specifications
Side by side
| Sound | ||
| Output power | — | 100 W |
| Speaker channels | 2.0 | — |
| Channel count | 2 | — |
| Subwoofer | None | Optional (sold separately) |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Stereo | Yes | — |
| Battery & charging | ||
| Battery life | 12 h | — |
| Battery capacity | 2,200 mAh | — |
| Charging time | 2.5 h | — |
| Mains powered | Yes | Yes |
| Battery powered (portable) | Yes | No |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 5 |
| USB-C | Yes | — |
| 3.5 mm jack / AUX | Yes | — |
| HDMI eARC / ARC | Yes | Yes |
| Optical input | — | Yes |
| Design & build | ||
| Width | 460 mm | — |
| Features | ||
| Remote control | Yes | Yes |
| Placement | an der Wand, unter dem Fernseher | unter dem Fernseher, vor dem Fernseher |
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