Bose - QuietComfort Ultra Headphones vs Bowers & Wilkins - Px8
Between the QuietComfort Ultra Headphones and Px8, the QuietComfort Ultra Headphones comes out ahead in weight / spatial audio, while the Px8 wins on battery life / driver size. Overall, the QuietComfort Ultra Headphones scores 62.9 and the Px8 scores 67.4 on our Mars Score.
Which should you buy?
The Px8 edges ahead on the Mars Score (62.9 vs 67.4), but the 4.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the QuietComfort Ultra Headphones if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight, spatial audio.
Pick the Px8 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are battery life, driver size.
Both ship with comparable active noise cancellation, multipoint, ldac, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Why Bose - QuietComfort Ultra Headphones wins
- ▲Weight — 67.00 g less. 253 vs 320.
- ▲Has Spatial audio.
Why Bowers & Wilkins - Px8 wins
- ▲Battery life — 25.00% more. 30 h vs 24 h.
- ▲Driver size — 14.29% more. 40 mm vs 35 mm.
Spec comparison
Design
| Spec | Bose - QuietComfort Ultra Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 253 glead | 320 g |
| Water resistance | none | none |
Audio
| Spec | Bose - QuietComfort Ultra Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Driver sizeⓘ | 35 mm | 40 mmlead |
| Impedanceⓘ | 32 Ω | 32 Ω |
| Sensitivityⓘ | 100 dB | 111 dBlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | truelead | false |
Battery
| Spec | Bose - QuietComfort Ultra Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Battery life | 24 h | 30 hlead |
| Fast chargeⓘ | true | true |
Connectivity
| Spec | Bose - QuietComfort Ultra Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Bluetoothⓘ | 5.3lead | 5.2 |
| Multipointⓘ | true | true |
| 3.5mm jack | true | true |
| LDACⓘ | false | false |
| aptX HDⓘ | true | true |
Frequently asked
Which has better battery life, QuietComfort Ultra Headphones or Px8?+
Px8 lasts 30 hours vs 24 hours.
Do QuietComfort Ultra Headphones or Px8 have active noise cancellation?+
Both models have active noise cancellation.
Which supports LDAC, QuietComfort Ultra Headphones or Px8?+
Neither supports LDAC.
Spec-level deep dives
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