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Sennheiser HD 660S2 — Over-ear · 2023
Sennheiser

Sennheiser HD 660S2

Over-ear · 2023

92
/ 100
From $599
VS
HiFiMan Susvara wins by 4
HiFiMan Susvara — Planar magnetic
HiFiMan

HiFiMan Susvara

Planar magnetic

96
/ 100
From $5,999
Specdex verdict

HiFiMan Susvara takes it — here’s why.

In our weighted Specdex score, Sennheiser HD 660S2 lands at 92 and HiFiMan Susvara at 96. That puts HiFiMan Susvara ahead by 4 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 HiFiMan Susvara if…

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

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

Sound quality

HiFiMan Susvara

Tuning, detail, and staging

HiFiMan Susvara leads on sound (96 vs 92).

Noise cancelling

Sennheiser HD 660S2

ANC strength for commute and travel

Sennheiser HD 660S2 leads on anc (90 vs 0).

Comfort

Sennheiser HD 660S2

Long-session wearability

Sennheiser HD 660S2 leads on comfort (91 vs 88).

Value for money

Sennheiser HD 660S2

Specdex score per dollar at MSRP

Sennheiser HD 660S2 more score per dollar ($599 vs $5,999).

Sennheiser HD 660S2 92
vs
96 HiFiMan Susvara

Score breakdown

Sennheiser HD 660S2
92
anc 90
sound 92
comfort 91
battery 82
features 88
HiFiMan Susvara
96
anc 0
sound 96
comfort 88
battery 100
features 50

Specs side-by-side

Sennheiser HD 660S2 versus HiFiMan Susvara — full spec comparison
Spec Sennheiser HD 660S2 HiFiMan Susvara
Type
Over-ear
Planar magnetic
Release year
2023
—

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

HiFiMan Susvara

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: Sennheiser HD 660S2 vs HiFiMan Susvara

Which is better, Sennheiser HD 660S2 or HiFiMan Susvara? +

HiFiMan Susvara scores 96 on our weighted rubric — ahead by 4. 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 HiFiMan Susvara worth the price? +

At $5,999, HiFiMan Susvara delivers a Specdex score of 96 — strongest in battery.

Does Sennheiser HD 660S2 or HiFiMan Susvara 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 HiFiMan Susvara? +

HiFiMan Susvara — leads on sound (96 vs 92). Tuning, detail, and staging.

Which is better for noise cancelling, Sennheiser HD 660S2 or HiFiMan Susvara? +

Sennheiser HD 660S2 — leads on anc (90 vs 0). ANC strength for commute and travel.