Bose - QuietComfort Headphones vs Bowers & Wilkins - Px8
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Bose - QuietComfort Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Weight | 240 g | 320 g |
| Battery life | 24 h | 30 h |
| Driver size | 35 mm | 40 mm |
Between the QuietComfort Headphones and Px8, the QuietComfort Headphones comes out ahead in weight, while the Px8 wins on battery life / driver size. Overall, the QuietComfort Headphones scores 70.2 and the Px8 scores 70.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.2 vs 70.8). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the QuietComfort 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. The single most decisive one: Weight — 80.00 g less. 240 vs 320.
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. The single most decisive one: Battery life — 25.00% more. 30 h vs 24 h.
Both ship with comparable active noise cancellation, spatial audio, multipoint, 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.
Which should you buy: Bose - QuietComfort Headphones or Bowers & Wilkins - Px8?
Bowers & Wilkins - Px8 leads the current Mars Score by 0.6 points.The more useful decision is the trade-off behind that result: compare driver size, battery life, weight against the way you will actually use the product.
Choose Bose - QuietComfort Headphones if…
Bose - QuietComfort Headphones has the measurable edge on weight g.
Choose Bowers & Wilkins - Px8 if…
Bowers & Wilkins - Px8 has the measurable edge on battery life h, driver size mm.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Bose - QuietComfort Headphones wins
- ▲Weight — 80.00 g less. 240 vs 320.
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 Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 240 glead | 320 g |
| Water resistance | none | none |
Audio
| Spec | Bose - QuietComfort Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Driver sizeⓘ | 35 mm | 40 mmlead |
| Impedanceⓘ | 32 Ω | 32 Ω |
| Sensitivityⓘ | 98 dB | 111 dBlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Bose - QuietComfort Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Battery lifeⓘ | 24 h | 30 hlead |
| Fast chargeⓘ | true | true |
Connectivity
| Spec | Bose - QuietComfort Headphones | Bowers & Wilkins - Px8 |
|---|---|---|
| Bluetoothⓘ | 5.1 | 5.2lead |
| Multipointⓘ | true | true |
| 3.5mm jack | true | true |
| LDACⓘ | false | false |
| aptX HDⓘ | false | truelead |
Frequently asked
Which has better battery life, QuietComfort Headphones or Px8?+
Px8 lasts 30 hours vs 24 hours.
Do QuietComfort Headphones or Px8 have active noise cancellation?+
Both models have active noise cancellation.
Which supports LDAC, QuietComfort Headphones or Px8?+
Neither supports LDAC.