Skip to content
Specdex
Compare now
Sennheiser HD 660S — Open-back
Sennheiser

Sennheiser HD 660S

Open-back

90
/ 100
From $499
VS
Meze Audio 109 Pro — Open-back
Meze Audio

Meze Audio 109 Pro

Open-back

90
/ 100
From $799
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, Sennheiser HD 660S lands at 90 and Meze Audio 109 Pro at 90. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick Sennheiser HD 660S if…

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

Pick Meze Audio 109 Pro if…

  • ✓Reference-level detail
  • ✓Well-regarded in audiophile community
  • ✓Long-term ownership appeal
Share this comparison: Share to Reddit X / Twitter

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 HD 660S

Specdex score per dollar at MSRP

Sennheiser HD 660S more score per dollar ($499 vs $799).

Sennheiser HD 660S 90
vs
90 Meze Audio 109 Pro

Score breakdown

Sennheiser HD 660S
90
anc 0
sound 90
comfort 88
battery 100
features 50
Meze Audio 109 Pro
90
anc 0
sound 90
comfort 88
battery 100
features 50

Specs side-by-side

Sennheiser HD 660S versus Meze Audio 109 Pro — full spec comparison
Spec Sennheiser HD 660S Meze Audio 109 Pro
Type
Open-back
Open-back

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

Meze Audio 109 Pro

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 660S vs Meze Audio 109 Pro

Which is better, Sennheiser HD 660S or Meze Audio 109 Pro? +

Both score 90 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is Sennheiser HD 660S worth the price? +

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

Is Meze Audio 109 Pro worth the price? +

At $799, Meze Audio 109 Pro delivers a Specdex score of 90 — strongest in battery.

Does Sennheiser HD 660S or Meze Audio 109 Pro 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 660S or Meze Audio 109 Pro? +

Sennheiser HD 660S — more score per dollar ($499 vs $799). Specdex score per dollar at MSRP.