Why is A70 better than HD660 Pro?
A70 has no measurable advantages in this pair.
Why is HD660 Pro better than A70?
- Lowest frequency20 Hz vs 10 Hz2×
- Highest frequency20,000 Hz vs 30,000 Hz+50%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Driver size | 40 mm | 40 mm |
| Lowest frequency | 20 Hz | 10 Hz |
| Highest frequency | 20,000 Hz | 30,000 Hz |
| Impedance | 32 Ω | 150 Ω |
| Sensitivity | 110 dB | 96 dB |
| Noise control | ||
| Active noise cancelling | No | No |
| Battery & charging | ||
| Battery life | 72 h | — |
| Battery capacity | 650 mAh | — |
| Charging time | 3 h | — |
| Connectivity | ||
| Wireless | Yes | No |
| 3.5 mm jack / AUX | Yes | Yes |
| Design & build | ||
| Weight | — | 250 g |
