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64 Audio U12t — IEM
64 Audio

64 Audio U12t

IEM

95
/ 100
From $1,999
VS
Sennheiser HD 800S · Moss Green — Over-ear · 2016
Sennheiser

Sennheiser HD 800S · Moss Green

Over-ear · 2016

95
/ 100
From $1,699
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, 64 Audio U12t lands at 95 and Sennheiser HD 800S · Moss Green at 95. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick 64 Audio U12t if…

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

Pick Sennheiser HD 800S · Moss Green if…

  • Flagship comfort + ANC on modern models
  • Premium build
  • Active noise cancellation (most models)
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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

Sennheiser HD 800S · Moss Green

ANC strength for commute and travel

Sennheiser HD 800S · Moss Green leads on anc (93 vs 0).

Comfort

Sennheiser HD 800S · Moss Green

Long-session wearability

Sennheiser HD 800S · Moss Green leads on comfort (94 vs 88).

Value for money

Sennheiser HD 800S · Moss Green

Specdex score per dollar at MSRP

Sennheiser HD 800S · Moss Green more score per dollar ($1,699 vs $1,999).

64 Audio U12t 95
vs
95 Sennheiser HD 800S · Moss Green

Score breakdown

64 Audio U12t
95
anc 0
sound 95
comfort 88
battery 100
features 50
Sennheiser HD 800S · Moss Green
95
anc 93
sound 95
comfort 94
battery 82
features 91

Specs side-by-side

64 Audio U12t versus Sennheiser HD 800S · Moss Green — full spec comparison
Spec 64 Audio U12t Sennheiser HD 800S · Moss Green
Type
IEM
Over-ear
Release year
2016

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

Sennheiser HD 800S · Moss Green

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: 64 Audio U12t vs Sennheiser HD 800S · Moss Green

Which is better, 64 Audio U12t or Sennheiser HD 800S · Moss Green? +

Both score 95 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is 64 Audio U12t worth the price? +

At $1,999, 64 Audio U12t delivers a Specdex score of 95 — strongest in battery.

Is Sennheiser HD 800S · Moss Green worth the price? +

At $1,699, Sennheiser HD 800S · Moss Green delivers a Specdex score of 95 — strongest in sound.

Does 64 Audio U12t or Sennheiser HD 800S · Moss Green 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 noise cancelling, 64 Audio U12t or Sennheiser HD 800S · Moss Green? +

Sennheiser HD 800S · Moss Green — leads on anc (93 vs 0). ANC strength for commute and travel.

Which is better for comfort, 64 Audio U12t or Sennheiser HD 800S · Moss Green? +

Sennheiser HD 800S · Moss Green — leads on comfort (94 vs 88). Long-session wearability.