Why is MM-100 better than HD 660S2?
- Driver size90 mm vs 38 mm2.4×
Why is HD 660S2 better than MM-100?
- Lowest frequency20 Hz vs 8 Hz2.5×
- Highest frequency25,000 Hz vs 41,500 Hz+66%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Ear cup design | Open-back | — |
| Driver type | Planar magnetic | — |
| Driver size | 90 mm | 38 mm |
| Number of drivers | 1 | — |
| Lowest frequency | 20 Hz | 8 Hz |
| Highest frequency | 25,000 Hz | 41,500 Hz |
| Impedance | 18 Ω | 300 Ω |
| Sensitivity | 98 dB | 104 dB |
| Noise control | ||
| Active noise cancelling | No | No |
| Connectivity | ||
| Wireless | No | No |
| Design & build | ||
| Weight | — | 260 g |
| Colours | Black | Black |
