Why is ATH-TWX9 better than Liberty 4?
- Active noise cancellingYes · Liberty 4: No
- Hi-res codec (LDAC / aptX HD / LHDC)Yes · Liberty 4: No
- Lowest frequency10 Hz vs 20 Hz2×
- Bluetooth version5.2 vs 5+4%
- Earbud weight (each)5.4 g vs 6 g+11%
Why is Liberty 4 better than ATH-TWX9?
- Battery life6.5 h vs 9 h+38%
- Charging time2.5 h vs 1 h2.5×
- Driver size5.8 mm vs 9.2 mm+59%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 5.8 mm | 9.2 mm |
| Lowest frequency | 10 Hz | 20 Hz |
| Highest frequency | 40,000 Hz | 40,000 Hz |
| Impedance | 16 Ω | 16 Ω |
| Sensitivity | 102 dB | 91 dB |
| Spatial / 3D audio | — | Yes |
| Head tracking | — | Yes |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Transparency / ambient mode | Yes | Yes |
| Battery & charging | ||
| Battery life | 6.5 h | 9 h |
| Battery life with ANC | 6 h | — |
| Total with charging case | — | 28 h |
| Charging time | 2.5 h | 1 h |
| Wireless charging (case) | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5 |
| Bluetooth codecs | aptX Adaptive, aptX, AAC, SBC | aptX |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | No |
| aptX | Yes | Yes |
| LDAC | No | No |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Earbud weight (each) | 5.4 g | 6 g |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Colours | — | Cloud White, Sky Blue, Nova Red, Midnight Black |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
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