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HiFiMan Edition XS — Planar magnetic
HiFiMan

HiFiMan Edition XS

Planar magnetic

88
/ 100
From $499
VS
Sennheiser HD 660S wins by 2
Sennheiser HD 660S — Open-back
Sennheiser

Sennheiser HD 660S

Open-back

90
/ 100
From $499
Specdex verdict

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

In our weighted Specdex score, HiFiMan Edition XS lands at 88 and Sennheiser HD 660S at 90. That puts Sennheiser HD 660S ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.

Pick HiFiMan Edition XS if…

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

Pick Sennheiser HD 660S 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

Sennheiser HD 660S

Tuning, detail, and staging

Sennheiser HD 660S leads on sound (90 vs 88).

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

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

HiFiMan Edition XS 88
vs
90 Sennheiser HD 660S

Score breakdown

HiFiMan Edition XS
88
anc 0
sound 88
comfort 88
battery 100
features 50
Sennheiser HD 660S
90
anc 0
sound 90
comfort 88
battery 100
features 50

Specs side-by-side

HiFiMan Edition XS versus Sennheiser HD 660S — full spec comparison
Spec HiFiMan Edition XS Sennheiser HD 660S
Type
Planar magnetic
Open-back

HiFiMan Edition XS

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

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: HiFiMan Edition XS vs Sennheiser HD 660S

Which is better, HiFiMan Edition XS or Sennheiser HD 660S? +

Sennheiser HD 660S scores 90 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.

Is HiFiMan Edition XS worth the price? +

At $499, HiFiMan Edition XS delivers a Specdex score of 88 — strongest in battery.

Is Sennheiser HD 660S worth the price? +

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

Does HiFiMan Edition XS 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.

Which is better for sound quality, HiFiMan Edition XS or Sennheiser HD 660S? +

Sennheiser HD 660S — leads on sound (90 vs 88). Tuning, detail, and staging.