Why is KH-BT04 better than VMK25.2?
- Weight245 g vs 300 g+22%
- Charging time1.5 h vs 2.5 h+67%
Why is VMK25.2 better than KH-BT04?
- Battery life60 h vs 95 h+58%
- Battery life with ANC40 h vs 55 h+38%
- Driver size40 mm vs 45 mm+12%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 40 mm | 45 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | 32 Ω |
| Hi-Res Audio | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 60 h | 95 h |
| Battery life with ANC | 40 h | 55 h |
| Battery capacity | 800 mAh | — |
| Charging time | 1.5 h | 2.5 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | aptX HD | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | Yes | — |
| LDAC | No | — |
| USB-C | — | Yes |
| 3.5 mm jack / AUX | — | Yes |
| Design & build | ||
| Weight | 245 g | 300 g |
| Foldable | Yes | — |
| Colours | Black | Black |
| Features | ||
| Hands-free calls | Yes | Yes |
