Dimensions
Size comparison
YU4Willen
| YU4 | Willen | Difference | |
|---|---|---|---|
| Height | 220 mm | 100.5 mm | +119.5 mm |
| Width | 140 mm | 101.6 mm | +38.4 mm |
| Depth | 190 mm | 40.4 mm | +149.6 mm |
| Weight | 3,200 g | 310 g | +2,890 g |
Drawn to the same scale from the official dimensions (front and side).
Why is YU4 better than Willen?
- Output power70 W vs 10 W7×
- Channel count2 vs 12×
- StereoYes · Willen: No
- aptXYes · Willen: No
- Lowest frequency60 Hz vs 100 Hz+67%
Why is Willen better than YU4?
- Weight3,200 g vs 310 g10.3×
- Bluetooth version4 vs 5.1+27%
Specifications
Side by side
| Sound | ||
| Driver type | — | Dynamic |
| Output power | 70 W | 10 W |
| Speaker channels | 2.0 | 1.0 |
| Channel count | 2 | 1 |
| Lowest frequency | 60 Hz | 100 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Adjustable equaliser | — | Yes |
| Stereo | Yes | No |
| Battery & charging | ||
| Battery life | — | 15 h |
| Charging time | — | 3 h |
| Quick charge (claimed) | — | 20 min → 3 h |
| Fast charging support | — | Yes |
| Mains powered | Yes | No |
| Battery powered (portable) | No | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 4 | 5.1 |
| Bluetooth codecs | aptX, SBC | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | Yes | No |
| LDAC | No | No |
| USB-C | — | Yes |
| 3.5 mm jack / AUX | Yes | — |
| Optical input | Yes | — |
| Smart & streaming | ||
| Wi-Fi | — | Yes |
| Companion app | — | Yes |
| Design & build | ||
| Weight | 3,200 g | 310 g |
| Width | 140 mm | 102 mm |
| Height | 220 mm | 100 mm |
| Depth | 190 mm | 40 mm |
| Protection rating | — | IP67 |
| Water resistance (IPx) | — | IPx7 |
| Dust protection (IP) | — | 6 |
| Colours | White | — |
| Features | ||
| Hands-free calls | — | Yes |
| Party / stereo pairing | — | Yes |
