Sony
Sony WH-1000XM4
Over-ear · 2020
90
/ 100
From $349
VS
Sennheiser
Sennheiser HD 660S
Open-back
90
/ 100
From $499
Specdex verdict
Dead heat — it comes down to priorities.
In our weighted Specdex score, Sony WH-1000XM4 lands at 90 and Sennheiser HD 660S at 90. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Sony WH-1000XM4 if…
- ✓Flagship comfort + ANC on modern models
- ✓Premium build
- ✓Active noise cancellation (most models)
Pick Sennheiser HD 660S if…
- ✓Reference-level detail
- ✓Well-regarded in audiophile community
- ✓Long-term ownership appeal
Sony WH-1000XM4 90
vs 90 Sennheiser HD 660S
Score breakdown
Sony WH-1000XM4
90 anc 88
sound 90
comfort 89
battery 82
features 86
Sennheiser HD 660S
90 anc 0
sound 90
comfort 88
battery 100
features 50
Specs side-by-side
| Spec | Sony WH-1000XM4 | Sennheiser HD 660S |
|---|---|---|
| Type | Over-ear | Open-back |
| Release year | 2020 | — |
Sony WH-1000XM4
Pros
- +Flagship comfort + ANC on modern models
- +Premium build
- +Active noise cancellation (most models)
Cons
- −Battery varies by codec
- −Some are Bluetooth-only
- −Price creep vs previous gen
Sennheiser HD 660S
Pros
- +Reference-level detail
- +Well-regarded in audiophile community
- +Long-term ownership appeal
Cons
- −Requires amplifier (most)
- −No active noise cancellation
- −Impractical for commuting
FAQ: Sony WH-1000XM4 vs Sennheiser HD 660S
Which is better, Sony WH-1000XM4 or Sennheiser HD 660S? +
Both score 90 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Sony WH-1000XM4 worth the price? +
At $349, Sony WH-1000XM4 delivers a Specdex score of 90 — strongest in sound.
Is Sennheiser HD 660S worth the price? +
At $499, Sennheiser HD 660S delivers a Specdex score of 90 — strongest in battery.
Does Sony WH-1000XM4 or Sennheiser HD 660S last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.