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Bose QuietComfort Ultra 2 — World-class ANC · 30hr · Immersive Audio
Bose

Bose QuietComfort Ultra 2

World-class ANC · 30hr · Immersive Audio

93
/ 100
From $449
VS
Bose QuietComfort Ultra 2 wins by 3
Sennheiser HD 600 — Open-back
Sennheiser

Sennheiser HD 600

Open-back

90
/ 100
From $399
Specdex verdict

Bose QuietComfort Ultra 2 takes it — here’s why.

In our weighted Specdex score, Bose QuietComfort Ultra 2 lands at 93 and Sennheiser HD 600 at 90. That puts Bose QuietComfort Ultra 2 ahead by 3 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Bose QuietComfort Ultra 2 if…

  • ✓Deepest ANC on the market
  • ✓Comfortable for 8hr+ flights
  • ✓Bose Immersive Audio

Pick Sennheiser HD 600 if…

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

Bose QuietComfort Ultra 2

ANC strength for commute and travel

Bose QuietComfort Ultra 2 leads on anc (100 vs 0).

Comfort

Bose QuietComfort Ultra 2

Long-session wearability

Bose QuietComfort Ultra 2 leads on comfort (96 vs 88).

Value for money

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

Bose QuietComfort Ultra 2 93
vs
90 Sennheiser HD 600

Score breakdown

Bose QuietComfort Ultra 2
93
anc 100
sound 90
comfort 96
battery 88
features 92
Sennheiser HD 600
90
anc 0
sound 90
comfort 88
battery 100
features 50

Specs side-by-side

Bose QuietComfort Ultra 2 versus Sennheiser HD 600 — full spec comparison
Spec Bose QuietComfort Ultra 2 Sennheiser HD 600
Driver
35 mm
—
ANC
Hybrid · 8-mic
—
Bluetooth
5.3 + Snapdragon Sound
—
Codecs
aptX Adaptive + AAC + SBC
—
Battery
30 hr (24 with ANC)
—
Charging
USB-C, 15-min for 2.5hr
—
Weight
254 g
—
Type
—
Open-back

Bose QuietComfort Ultra 2

Pros
  • +Deepest ANC on the market
  • +Comfortable for 8hr+ flights
  • +Bose Immersive Audio
Cons
  • −No multi-point with 2025 firmware bug
  • −Cable not included
  • −Pricier than XM6

Sennheiser HD 600

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 2 vs Sennheiser HD 600

Which is better, Bose QuietComfort Ultra 2 or Sennheiser HD 600? +

Bose QuietComfort Ultra 2 scores 93 on our weighted rubric — ahead by 3. Your best pick depends on the sub-scores above.

Is Bose QuietComfort Ultra 2 worth the price? +

At $449, Bose QuietComfort Ultra 2 delivers a Specdex score of 93 — strongest in anc.

Is Sennheiser HD 600 worth the price? +

At $399, Sennheiser HD 600 delivers a Specdex score of 90 — strongest in battery.

Does Bose QuietComfort Ultra 2 or Sennheiser HD 600 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, Bose QuietComfort Ultra 2 or Sennheiser HD 600? +

Bose QuietComfort Ultra 2 — leads on anc (100 vs 0). ANC strength for commute and travel.

Which is better for comfort, Bose QuietComfort Ultra 2 or Sennheiser HD 600? +

Bose QuietComfort Ultra 2 — leads on comfort (96 vs 88). Long-session wearability.