Between the Aventho 300 and HD 660S2, the Aventho 300 comes out ahead in active noise cancellation and multipoint, while the HD 660S2 wins on driver size. Overall, the Aventho 300 scores 72.6 and the HD 660S2 scores 64.2 on our Mars Score.
Which should you buy?
The Aventho 300 is the clear pick on raw spec strength, leading by 8.4 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 Aventho 300 if audio quality and feature breadth (ANC, codecs, multipoint) are the lead criteria for your purchase. The biggest gaps in its favor are active noise cancellation, multipoint, ldac, among others.
Pick the HD 660S2 if you care most about driver size. Its strongest claims are driver size.
Both ship with comparable spatial audio, weight, water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: the Aventho 300 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Beyerdynamic - Aventho 300 wins
- ▲Has Active noise cancellation.
- ▲Has Multipoint.
- ▲Has LDAC.
- ▲Battery life: 60 h vs 0 h.
Why Sennheiser - HD 660S2 wins
- ▲Driver size — 5.00% more. 42 mm vs 40 mm.
Spec comparison
Design
| Spec | Beyerdynamic - Aventho 300 | Sennheiser - HD 660S2 |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 260 g | 260 g |
| Water resistance | none | none |
Audio
| Spec | Beyerdynamic - Aventho 300 | Sennheiser - HD 660S2 |
|---|---|---|
| Driver sizeⓘ | 40 mm | 42 mmlead |
| Impedanceⓘ | 32 Ω | 300 Ωlead |
| Sensitivityⓘ | 100 dB | 104 dBlead |
| Active noise cancellationⓘ | truelead | false |
| Transparency mode | truelead | false |
| Spatial audioⓘ | false | false |
Battery
| Spec | Beyerdynamic - Aventho 300 | Sennheiser - HD 660S2 |
|---|---|---|
| Battery life | 60 hlead | 0 h |
| Fast chargeⓘ | truelead | false |
Connectivity
| Spec | Beyerdynamic - Aventho 300 | Sennheiser - HD 660S2 |
|---|---|---|
| Bluetoothⓘ | 5.3lead | 0 |
| Multipointⓘ | truelead | false |
| 3.5mm jack | true | true |
| LDACⓘ | truelead | false |
| aptX HDⓘ | truelead | false |
Frequently asked
Which has better battery life, Aventho 300 or HD 660S2?+
Aventho 300 lasts 60 hours vs 0 hours.
Do Aventho 300 or HD 660S2 have active noise cancellation?+
Aventho 300 has ANC; HD 660S2 does not.
Which supports LDAC, Aventho 300 or HD 660S2?+
Aventho 300 supports LDAC; HD 660S2 does not.
Spec-level deep dives
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