 |  | |
| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Sennheiser MM 550 |  Westone UM PRO 20 | |
|---|---|---|
| Sound output | Surround | Stereo |
| Style | On-Ear | In-Ear |
| Connectivity technology | Wireless | Wired |
| Headset (integrated/enclosed microphone) | yes | yes |
| Sennheiser MM 550 | Westone UM PRO 20 | |
|---|---|---|
| Colour of product | Black |
|
| Acoustic design | Closed | Closed |
| Attachment type | Headband | Ear canal |
| Sennheiser MM 550 | Westone UM PRO 20 | |
|---|---|---|
| Weight | 6.31 oz | 0.45 oz |
| Sennheiser MM 550 | Westone UM PRO 20 | |
|---|---|---|
| Impedance | 590.0 Ω | 27.0 Ω |
| Sensitivity | < 107 | < 119 |
| Frequency range | 22 - 15000 | 20 - 18000 |
| Driver technology | Dynamic | Balanced |
| Simulated surround sound | yes | no |
| Sennheiser MM 550 | Westone UM PRO 20 | |
|---|---|---|
| Cable length | 1.4 | 1.3 |
| USB | no | no |
| Sennheiser MM 550 | Westone UM PRO 20 | |
|---|---|---|
| Noise-canceling | yes | no |
| Pros | ||
|---|---|---|
| Cons |
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