Sennheiser
Sennheiser HD 660S2 · Arctic White
Over-ear · 2023
92
/ 100
From $599
VS
64 Audio U12t wins by 3
64 Audio
64 Audio U12t
IEM
95
/ 100
From $1,999
Specdex verdict
64 Audio U12t takes it — here’s why.
In our weighted Specdex score, Sennheiser HD 660S2 · Arctic White lands at 92 and 64 Audio U12t at 95. That puts 64 Audio U12t ahead by 3 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Sennheiser HD 660S2 · Arctic White if…
- ✓Flagship comfort + ANC on modern models
- ✓Premium build
- ✓Active noise cancellation (most models)
Pick 64 Audio U12t if…
- ✓Reference-level detail
- ✓Well-regarded in audiophile community
- ✓Long-term ownership appeal
Sennheiser HD 660S2 · Arctic White 92
vs 95 64 Audio U12t
Score breakdown
Sennheiser HD 660S2 · Arctic White
92 anc 90
sound 92
comfort 91
battery 82
features 88
64 Audio U12t
95 anc 0
sound 95
comfort 88
battery 100
features 50
Specs side-by-side
| Spec | Sennheiser HD 660S2 · Arctic White | 64 Audio U12t |
|---|---|---|
| Type | Over-ear | IEM |
| Release year | 2023 | — |
Sennheiser HD 660S2 · Arctic White
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
64 Audio U12t
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 · Arctic White vs 64 Audio U12t
Which is better, Sennheiser HD 660S2 · Arctic White or 64 Audio U12t? +
64 Audio U12t scores 95 on our weighted rubric — ahead by 3. Your best pick depends on the sub-scores above.
Is Sennheiser HD 660S2 · Arctic White worth the price? +
At $599, Sennheiser HD 660S2 · Arctic White delivers a Specdex score of 92 — strongest in sound.
Is 64 Audio U12t worth the price? +
At $1,999, 64 Audio U12t delivers a Specdex score of 95 — strongest in battery.
Does Sennheiser HD 660S2 · Arctic White or 64 Audio U12t 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.