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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 1
Sennheiser Momentum 4 · Navy Blue — Over-ear · 2022
Sennheiser

Sennheiser Momentum 4 · Navy Blue

Over-ear · 2022

91
/ 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 Sennheiser Momentum 4 · Navy Blue at 91. That puts Sennheiser HD 660S2 ahead by 1 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 Sennheiser Momentum 4 · 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

Tie

Tuning, detail, and staging

Effectively tied — neither pulls a 2-point weighted lead.

Noise cancelling

Tie

ANC strength for commute and travel

Effectively tied — neither pulls a 2-point weighted lead.

Comfort

Tie

Long-session wearability

Effectively tied — neither pulls a 2-point weighted lead.

Value for money

Sennheiser Momentum 4 · Navy Blue

Specdex score per dollar at MSRP

Sennheiser Momentum 4 · Navy Blue more score per dollar ($349 vs $599).

Sennheiser HD 660S2 92
vs
91 Sennheiser Momentum 4 · Navy Blue

Score breakdown

Sennheiser HD 660S2
92
anc 90
sound 92
comfort 91
battery 82
features 88
Sennheiser Momentum 4 · Navy Blue
91
anc 89
sound 91
comfort 90
battery 82
features 87

Specs side-by-side

Sennheiser HD 660S2 versus Sennheiser Momentum 4 · Navy Blue — full spec comparison
Spec Sennheiser HD 660S2 Sennheiser Momentum 4 · Navy Blue
Type
Over-ear
Over-ear
Release year
2023
2022

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

Sennheiser Momentum 4 · 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 Sennheiser Momentum 4 · Navy Blue

Which is better, Sennheiser HD 660S2 or Sennheiser Momentum 4 · Navy Blue? +

Sennheiser HD 660S2 scores 92 on our weighted rubric — ahead by 1. 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 Sennheiser Momentum 4 · Navy Blue worth the price? +

At $349, Sennheiser Momentum 4 · Navy Blue delivers a Specdex score of 91 — strongest in sound.

Does Sennheiser HD 660S2 or Sennheiser Momentum 4 · 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 the better value, Sennheiser HD 660S2 or Sennheiser Momentum 4 · Navy Blue? +

Sennheiser Momentum 4 · Navy Blue — more score per dollar ($349 vs $599). Specdex score per dollar at MSRP.