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Sennheiser HD 660S · Moss Green — Open-back
Sennheiser

Sennheiser HD 660S · Moss Green

Open-back

90
/ 100
From $499
VS
Sennheiser HD 660S · Moss Green wins by 1
Bowers & Wilkins Px7 S2e — Over-ear · 2023
Bowers & Wilkins

Bowers & Wilkins Px7 S2e

Over-ear · 2023

89
/ 100
From $399
Specdex verdict

Sennheiser HD 660S · Moss Green takes it — here’s why.

In our weighted Specdex score, Sennheiser HD 660S · Moss Green lands at 90 and Bowers & Wilkins Px7 S2e at 89. That puts Sennheiser HD 660S · Moss Green ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Sennheiser HD 660S · Moss Green if…

  • ✓Reference-level detail
  • ✓Well-regarded in audiophile community
  • ✓Long-term ownership appeal

Pick Bowers & Wilkins Px7 S2e 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

Bowers & Wilkins Px7 S2e

ANC strength for commute and travel

Bowers & Wilkins Px7 S2e leads on anc (87 vs 0).

Comfort

Tie

Long-session wearability

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

Value for money

Bowers & Wilkins Px7 S2e

Specdex score per dollar at MSRP

Bowers & Wilkins Px7 S2e more score per dollar ($399 vs $499).

Sennheiser HD 660S · Moss Green 90
vs
89 Bowers & Wilkins Px7 S2e

Score breakdown

Sennheiser HD 660S · Moss Green
90
anc 0
sound 90
comfort 88
battery 100
features 50
Bowers & Wilkins Px7 S2e
89
anc 87
sound 89
comfort 88
battery 82
features 85

Specs side-by-side

Sennheiser HD 660S · Moss Green versus Bowers & Wilkins Px7 S2e — full spec comparison
Spec Sennheiser HD 660S · Moss Green Bowers & Wilkins Px7 S2e
Type
Open-back
Over-ear
Release year
—
2023

Sennheiser HD 660S · Moss Green

Pros
  • +Reference-level detail
  • +Well-regarded in audiophile community
  • +Long-term ownership appeal
Cons
  • −Requires amplifier (most)
  • −No active noise cancellation
  • −Impractical for commuting

Bowers & Wilkins Px7 S2e

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 660S · Moss Green vs Bowers & Wilkins Px7 S2e

Which is better, Sennheiser HD 660S · Moss Green or Bowers & Wilkins Px7 S2e? +

Sennheiser HD 660S · Moss Green scores 90 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.

Is Sennheiser HD 660S · Moss Green worth the price? +

At $499, Sennheiser HD 660S · Moss Green delivers a Specdex score of 90 — strongest in battery.

Is Bowers & Wilkins Px7 S2e worth the price? +

At $399, Bowers & Wilkins Px7 S2e delivers a Specdex score of 89 — strongest in sound.

Does Sennheiser HD 660S · Moss Green or Bowers & Wilkins Px7 S2e 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 noise cancelling, Sennheiser HD 660S · Moss Green or Bowers & Wilkins Px7 S2e? +

Bowers & Wilkins Px7 S2e — leads on anc (87 vs 0). ANC strength for commute and travel.

Which is the better value, Sennheiser HD 660S · Moss Green or Bowers & Wilkins Px7 S2e? +

Bowers & Wilkins Px7 S2e — more score per dollar ($399 vs $499). Specdex score per dollar at MSRP.