 |  | |
| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Sennheiser HD 660s |  Sennheiser RS 175 | |
|---|---|---|
| Sound output | Stereo | Stereo |
| Style | Over-Ear | Over-Ear |
| Connectivity technology | Wired | Wireless |
| Headset (integrated/enclosed microphone) | no | no |
| Sennheiser HD 660s | Sennheiser RS 175 | |
|---|---|---|
| Colour of product | Black | Black |
| Acoustic design | Open | Closed |
| Attachment type | Headband | Headband |
| Sennheiser HD 660s | Sennheiser RS 175 | |
|---|---|---|
| Weight | 9.17 oz | 10.93 oz |
| Sennheiser HD 660s | Sennheiser RS 175 | |
|---|---|---|
| Impedance | 150.0 Ω | 32.0 Ω |
| Frequency range | 10 - 41000 | 17 - 22000 |
| Driver technology | Dynamic | Dynamic |
| Total harmonic distortion (THD) | 0.04 % | 0.5 % |
| Sennheiser HD 660s | Sennheiser RS 175 | |
|---|---|---|
| Battery operated | no | yes |
| Pros | ||
|---|---|---|
| Cons |
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