Sennheiser - HD 660S2 vs Sennheiser - Momentum 4 Wireless
Between the HD 660S2 and Momentum 4 Wireless, the HD 660S2 comes out ahead in weight, while the Momentum 4 Wireless wins on active noise cancellation and multipoint. Overall, the HD 660S2 scores 64.2 and the Momentum 4 Wireless scores 73.9 on our Mars Score.
Which should you buy?
The Momentum 4 Wireless is the clear pick on raw spec strength, leading by 9.7 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the HD 660S2 if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight.
Pick the Momentum 4 Wireless if audio quality and feature breadth (ANC, codecs, multipoint) are the lead criteria for your purchase. Its strongest claims are active noise cancellation, multipoint, ldac, among others.
Both ship with comparable driver size, spatial audio, water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: the Momentum 4 Wireless is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Sennheiser - HD 660S2 wins
- ▲Weight — 33.00 g less. 260 vs 293.
Why Sennheiser - Momentum 4 Wireless wins
- ▲Has Active noise cancellation.
- ▲Has Multipoint.
- ▲Has LDAC.
- ▲Battery life: 60 h vs 0 h.
Spec comparison
Design
| Spec | Sennheiser - HD 660S2 | Sennheiser - Momentum 4 Wireless |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 260 glead | 293 g |
| Water resistance | none | none |
Audio
| Spec | Sennheiser - HD 660S2 | Sennheiser - Momentum 4 Wireless |
|---|---|---|
| Driver sizeⓘ | 42 mm | 42 mm |
| Impedanceⓘ | 300 Ωlead | 60 Ω |
| Sensitivityⓘ | 104 dB | 106 dBlead |
| Active noise cancellationⓘ | false | truelead |
| Transparency mode | false | truelead |
| Spatial audioⓘ | false | false |
Battery
| Spec | Sennheiser - HD 660S2 | Sennheiser - Momentum 4 Wireless |
|---|---|---|
| Battery life | 0 h | 60 hlead |
| Fast chargeⓘ | false | truelead |
Connectivity
| Spec | Sennheiser - HD 660S2 | Sennheiser - Momentum 4 Wireless |
|---|---|---|
| Bluetoothⓘ | 0 | 5.2lead |
| Multipointⓘ | false | truelead |
| 3.5mm jack | true | true |
| LDACⓘ | false | truelead |
| aptX HDⓘ | false | truelead |
Frequently asked
Which has better battery life, HD 660S2 or Momentum 4 Wireless?+
Momentum 4 Wireless lasts 60 hours vs 0 hours.
Do HD 660S2 or Momentum 4 Wireless have active noise cancellation?+
Momentum 4 Wireless has ANC; HD 660S2 does not.
Which supports LDAC, HD 660S2 or Momentum 4 Wireless?+
Momentum 4 Wireless supports LDAC; HD 660S2 does not.
Spec-level deep dives
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