Skip to content
Specdex
Compare now
Bose QuietComfort Ultra — CustomTune ANC · Immersive Audio · aptX Adaptive
Bose

Bose QuietComfort Ultra

CustomTune ANC · Immersive Audio · aptX Adaptive

93
/ 100
From $429
VS
Bose QuietComfort Ultra wins by 3
Sennheiser HD 6XX · Midnight Black — Open-back
Sennheiser

Sennheiser HD 6XX · Midnight Black

Open-back

90
/ 100
From $219
Specdex verdict

Bose QuietComfort Ultra takes it — here’s why.

In our weighted Specdex score, Bose QuietComfort Ultra lands at 93 and Sennheiser HD 6XX · Midnight Black at 90. That puts Bose QuietComfort Ultra ahead by 3 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Bose QuietComfort Ultra if…

  • ✓Best comfort in class
  • ✓Excellent ANC
  • ✓Immersive Audio spatial feature

Pick Sennheiser HD 6XX · Midnight Black 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

Bose QuietComfort Ultra

Tuning, detail, and staging

Bose QuietComfort Ultra leads on sound (92 vs 90).

Noise cancelling

Bose QuietComfort Ultra

ANC strength for commute and travel

Bose QuietComfort Ultra leads on anc (96 vs 0).

Comfort

Bose QuietComfort Ultra

Long-session wearability

Bose QuietComfort Ultra leads on comfort (98 vs 88).

Value for money

Sennheiser HD 6XX · Midnight Black

Specdex score per dollar at MSRP

Sennheiser HD 6XX · Midnight Black more score per dollar ($219 vs $429).

Bose QuietComfort Ultra 93
vs
90 Sennheiser HD 6XX · Midnight Black

Score breakdown

Bose QuietComfort Ultra
93
anc 96
sound 92
comfort 98
battery 86
features 90
Sennheiser HD 6XX · Midnight Black
90
anc 0
sound 90
comfort 88
battery 100
features 50

Specs side-by-side

Bose QuietComfort Ultra versus Sennheiser HD 6XX · Midnight Black — full spec comparison
Spec Bose QuietComfort Ultra Sennheiser HD 6XX · Midnight Black
Driver
35 mm dynamic
—
Battery
24 h (Immersive Audio off) / 18 h (on)
—
Weight
253 g
—
Codecs
SBC, AAC, aptX Adaptive
—
Type
—
Open-back

Bose QuietComfort Ultra

Pros
  • +Best comfort in class
  • +Excellent ANC
  • +Immersive Audio spatial feature
Cons
  • −Bose app fiddly
  • −No USB-C audio (3.5 mm + Bluetooth only)
  • −No LDAC support

Sennheiser HD 6XX · 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

FAQ: Bose QuietComfort Ultra vs Sennheiser HD 6XX · Midnight Black

Which is better, Bose QuietComfort Ultra or Sennheiser HD 6XX · Midnight Black? +

Bose QuietComfort Ultra scores 93 on our weighted rubric — ahead by 3. Your best pick depends on the sub-scores above.

Is Bose QuietComfort Ultra worth the price? +

At $429, Bose QuietComfort Ultra delivers a Specdex score of 93 — strongest in comfort.

Is Sennheiser HD 6XX · Midnight Black worth the price? +

At $219, Sennheiser HD 6XX · Midnight Black delivers a Specdex score of 90 — strongest in battery.

Does Bose QuietComfort Ultra or Sennheiser HD 6XX · Midnight Black 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, Bose QuietComfort Ultra or Sennheiser HD 6XX · Midnight Black? +

Bose QuietComfort Ultra — leads on sound (92 vs 90). Tuning, detail, and staging.

Which is better for noise cancelling, Bose QuietComfort Ultra or Sennheiser HD 6XX · Midnight Black? +

Bose QuietComfort Ultra — leads on anc (96 vs 0). ANC strength for commute and travel.