vs
8.4Battery9.7
Why is Live Flex 3 better than Sleep A20?
Live Flex 3 has no measurable advantages in this pair.
Why is Sleep A20 better than Live Flex 3?
- Battery life10 h vs 14 h+40%
- Lowest frequency200 Hz vs 20 Hz10×
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | — |
| Lowest frequency | 200 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 13 Ω | 16 Ω |
| Sensitivity | 100 dB | — |
| Spatial / 3D audio | Yes | — |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Adaptive ANC | Yes | — |
| Transparency / ambient mode | Yes | — |
| Microphones | 6 | — |
| Battery & charging | ||
| Battery life | 10 h | 14 h |
| Battery life with ANC | 7 h | — |
| Total with charging case | 50 h | — |
| Charging time | — | 1.5 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | — | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| Multipoint (two devices) | Yes | — |
| USB-C | — | Yes |
| Design & build | ||
| Earbud weight (each) | — | 3 g |
| Protection rating | — | IPX4 |
| Water resistance (IPx) | — | IPx4 |
| Features | ||
| Touch controls | — | Yes |
