We've put together a comparison of these two impressive headphones Sennheiser HD 660 S vs GRADO SR325e. HD 660 S has a total rating of 8 out of 10 vs 7 out of 10 for SR325e.
Advantages Sennheiser HD 660 S over GRADO SR325e
- Better low limit of frequency response: 9Hz vs 18Hz
- Better high limit of frequency response: 41KHz vs 24KHz
- Higher sensitivity: 104dB vs 100dB
- Less weight: 9.1oz vs 12.6oz
- Detachable cable