vs
5.0Battery4.8
Why is CX 400BT True Wireless CX400TW1 better than EAH-AZ40?
- Lowest frequency5 Hz vs 20 Hz4×
- aptXYes · EAH-AZ40: No
- Charging time1.5 h vs 2 h+33%
- Driver size7 mm vs 6 mm+17%
- Highest frequency21,000 Hz vs 20,000 Hz+5%
Why is EAH-AZ40 better than CX 400BT True Wireless CX400TW1?
- Battery life7 h vs 7.5 h+7%
- Earbud weight (each)12 g vs 5 g2.4×
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 7 mm | 6 mm |
| Lowest frequency | 5 Hz | 20 Hz |
| Highest frequency | 21,000 Hz | 20,000 Hz |
| Sensitivity | 107 dB | — |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 7 h | 7.5 h |
| Charging time | 1.5 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.1 | 5.2 |
| Bluetooth codecs | aptX, AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | Yes | No |
| LDAC | No | No |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | 12 g | 5 g |
| Protection rating | — | IPX4 |
| Water resistance (IPx) | — | IPx4 |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | Yes | Yes |
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