Audeze
Audeze MM-500 · Midnight Black
Planar magnetic
92
/ 100
From $1,699
VS
Sennheiser
Sennheiser HD 660S2
Over-ear · 2023
92
/ 100
From $599
Specdex verdict
Dead heat — it comes down to priorities.
In our weighted Specdex score, Audeze MM-500 · Midnight Black lands at 92 and Sennheiser HD 660S2 at 92. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Audeze MM-500 · Midnight Black if…
- ✓Reference-level detail
- ✓Well-regarded in audiophile community
- ✓Long-term ownership appeal
Pick Sennheiser HD 660S2 if…
- ✓Flagship comfort + ANC on modern models
- ✓Premium build
- ✓Active noise cancellation (most models)
Audeze MM-500 · Midnight Black 92
vs 92 Sennheiser HD 660S2
Score breakdown
Audeze MM-500 · Midnight Black
92 anc 0
sound 92
comfort 88
battery 100
features 50
Sennheiser HD 660S2
92 anc 90
sound 92
comfort 91
battery 82
features 88
Specs side-by-side
| Spec | Audeze MM-500 · Midnight Black | Sennheiser HD 660S2 |
|---|---|---|
| Type | Planar magnetic | Over-ear |
| Release year | — | 2023 |
Audeze MM-500 · Midnight Black
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 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
FAQ: Audeze MM-500 · Midnight Black vs Sennheiser HD 660S2
Which is better, Audeze MM-500 · Midnight Black or Sennheiser HD 660S2? +
Both score 92 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Audeze MM-500 · Midnight Black worth the price? +
At $1,699, Audeze MM-500 · Midnight Black delivers a Specdex score of 92 — strongest in battery.
Is Sennheiser HD 660S2 worth the price? +
At $599, Sennheiser HD 660S2 delivers a Specdex score of 92 — strongest in sound.
Does Audeze MM-500 · Midnight Black or Sennheiser HD 660S2 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.