Why is GW100X better than HD 660S2?
- Weight188 g vs 260 g+38%
Why is HD 660S2 better than GW100X?
- Lowest frequency20 Hz vs 8 Hz2.5×
- Highest frequency20,000 Hz vs 41,500 Hz2.1×
Specifications
Side by side
| Sound | ||
| Fit | On-ear | Over-ear |
| Driver size | — | 38 mm |
| Lowest frequency | 20 Hz | 8 Hz |
| Highest frequency | 20,000 Hz | 41,500 Hz |
| Impedance | 38 Ω | 300 Ω |
| Sensitivity | 99 dB | 104 dB |
| Hi-Res Audio | Yes | — |
| Noise control | ||
| Active noise cancelling | No | No |
| Battery & charging | ||
| Battery life | 46 h | — |
| Battery capacity | 850 mAh | — |
| Charging time | 2 h | — |
| Connectivity | ||
| Wireless | Yes | No |
| Bluetooth version | 5.2 | — |
| Bluetooth codecs | aptX, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | Yes | — |
| LDAC | No | — |
| Multipoint (two devices) | Yes | — |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Weight | 188 g | 260 g |
| Colours | Black | Black |







