Dimensions
Size comparison
Acton IIIMiddleton
| Acton III | Middleton | Difference | |
|---|---|---|---|
| Height | 170 mm | 109 mm | +61 mm |
| Width | 260 mm | 230 mm | +30 mm |
| Depth | 150 mm | 95 mm | +55 mm |
| Weight | 2,850 g | 1,800 g | +1,050 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Acton III better than Middleton?
- Lowest frequency45 Hz vs 50 Hz+11%
Why is Middleton better than Acton III?
- Water resistance (IPx)IPx0 vs IPx7
- Weight2,850 g vs 1,800 g+58%
Specifications
Side by side
| Sound | ||
| Driver type | — | Dynamic |
| Driver size | — | 76.2 mm |
| Output power | 60 W | 60 W |
| Speaker channels | Stereo | 2.0 |
| Channel count | — | 2 |
| Lowest frequency | 45 Hz | 50 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Stereo | Yes | Yes |
| Battery & charging | ||
| Battery life | — | 20 h |
| Charging time | — | 4.5 h |
| Quick charge (claimed) | — | 20 min → 2 h |
| Fast charging support | — | Yes |
| Power bank function | — | Yes |
| Mains powered | Yes | No |
| Battery powered (portable) | No | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.1 |
| Bluetooth codecs | SBC | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| LE Audio | Yes | — |
| USB-C | — | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| HDMI eARC / ARC | Yes | — |
| Smart & streaming | ||
| Wi-Fi | Yes | Yes |
| Companion app | Yes | Yes |
| Design & build | ||
| Weight | 2,850 g | 1,800 g |
| Width | 260 mm | 230 mm |
| Height | 170 mm | 109 mm |
| Depth | 150 mm | 95 mm |
| Protection rating | — | IP67 |
| Water resistance (IPx) | IPx0 | IPx7 |
| Dust protection (IP) | — | 6 |
| Features | ||
| Party / stereo pairing | — | Yes |
