vs
8.6Noise control & calls8.6
7.7Battery9.1
Why is KH-BT04 better than REAL Blue NC 3?
- Hi-res codec (LDAC / aptX HD / LHDC)Yes · REAL Blue NC 3: No
- Weight245 g vs 280 g+14%
- Battery capacity800 mAh vs 700 mAh+14%
Why is REAL Blue NC 3 better than KH-BT04?
- Battery life60 h vs 98 h+63%
- Lowest frequency20 Hz vs 10 Hz2×
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 | 40 mm |
| Number of drivers | — | 1 |
| Lowest frequency | 20 Hz | 10 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | — |
| Hi-Res Audio | Yes | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | 60 h | 98 h |
| Battery life with ANC | 40 h | — |
| Battery capacity | 800 mAh | 700 mAh |
| Charging time | 1.5 h | — |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | aptX HD | aptX, AAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | No |
| aptX | Yes | Yes |
| LDAC | No | No |
| 3.5 mm jack / AUX | — | Yes |
| Smart & streaming | ||
| Voice assistant | — | Google Assistant, Siri |
| Companion app | — | Yes |
| Design & build | ||
| Weight | 245 g | 280 g |
| Foldable | Yes | Yes |
| Colours | Black | — |
| Features | ||
| Hands-free calls | Yes | — |
