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Sennheiser HD 660S2 — Over-ear · 2023
Sennheiser

Sennheiser HD 660S2

Over-ear · 2023

92
/ 100
From $599
VS
Sennheiser HD 660S2 wins by 2
Sony WH-1000XM4 · Navy Blue — Over-ear · 2020
Sony

Sony WH-1000XM4 · Navy Blue

Over-ear · 2020

90
/ 100
From $349
Specdex verdict

Sennheiser HD 660S2 takes it — here’s why.

In our weighted Specdex score, Sennheiser HD 660S2 lands at 92 and Sony WH-1000XM4 · Navy Blue at 90. That puts Sennheiser HD 660S2 ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Sennheiser HD 660S2 if…

  • ✓Flagship comfort + ANC on modern models
  • ✓Premium build
  • ✓Active noise cancellation (most models)

Pick Sony WH-1000XM4 · Navy Blue if…

  • ✓Flagship comfort + ANC on modern models
  • ✓Premium build
  • ✓Active noise cancellation (most models)
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Sound quality

Sennheiser HD 660S2

Tuning, detail, and staging

Sennheiser HD 660S2 leads on sound (92 vs 90).

Noise cancelling

Sennheiser HD 660S2

ANC strength for commute and travel

Sennheiser HD 660S2 leads on anc (90 vs 88).

Comfort

Sennheiser HD 660S2

Long-session wearability

Sennheiser HD 660S2 leads on comfort (91 vs 89).

Value for money

Sony WH-1000XM4 · Navy Blue

Specdex score per dollar at MSRP

Sony WH-1000XM4 · Navy Blue more score per dollar ($349 vs $599).

Sennheiser HD 660S2 92
vs
90 Sony WH-1000XM4 · Navy Blue

Score breakdown

Sennheiser HD 660S2
92
anc 90
sound 92
comfort 91
battery 82
features 88
Sony WH-1000XM4 · Navy Blue
90
anc 88
sound 90
comfort 89
battery 82
features 86

Specs side-by-side

Sennheiser HD 660S2 versus Sony WH-1000XM4 · Navy Blue — full spec comparison
Spec Sennheiser HD 660S2 Sony WH-1000XM4 · Navy Blue
Type
Over-ear
Over-ear
Release year
2023
2020

Sennheiser HD 660S2

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

Sony WH-1000XM4 · Navy Blue

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

FAQ: Sennheiser HD 660S2 vs Sony WH-1000XM4 · Navy Blue

Which is better, Sennheiser HD 660S2 or Sony WH-1000XM4 · Navy Blue? +

Sennheiser HD 660S2 scores 92 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.

Is Sennheiser HD 660S2 worth the price? +

At $599, Sennheiser HD 660S2 delivers a Specdex score of 92 — strongest in sound.

Is Sony WH-1000XM4 · Navy Blue worth the price? +

At $349, Sony WH-1000XM4 · Navy Blue delivers a Specdex score of 90 — strongest in sound.

Does Sennheiser HD 660S2 or Sony WH-1000XM4 · Navy Blue 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.

Which is better for sound quality, Sennheiser HD 660S2 or Sony WH-1000XM4 · Navy Blue? +

Sennheiser HD 660S2 — leads on sound (92 vs 90). Tuning, detail, and staging.

Which is better for noise cancelling, Sennheiser HD 660S2 or Sony WH-1000XM4 · Navy Blue? +

Sennheiser HD 660S2 — leads on anc (90 vs 88). ANC strength for commute and travel.