Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Bowers & Wilkins - Px8 | Sony - ULT Wear 2 |
|---|---|---|
| Battery life | 30 h | 50 h |
| Weight | 320 g | 255 g |
| LDAC | false | true |
Between the Px8 and ULT Wear 2, the Px8 comes out ahead in several specs, while the ULT Wear 2 wins on battery life / weight. Overall, the Px8 scores 70.8 and the ULT Wear 2 scores 75.1 on our Mars Score.
Which should you buy?
The ULT Wear 2 edges ahead on the Mars Score (70.8 vs 75.1), but the 4.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Px8 does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the ULT Wear 2 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, weight, ldac. The single most decisive one: Battery life — 66.67% more. 50 h vs 30 h.
Both ship with comparable driver size, active noise cancellation, spatial audio, 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: Bowers & Wilkins - Px8 or Sony - ULT Wear 2?
Sony - ULT Wear 2 leads the current Mars Score by 4.3 points.The more useful decision is the trade-off behind that result: compare battery life, weight against the way you will actually use the product.
Choose Bowers & Wilkins - Px8 if…
Bowers & Wilkins - Px8 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Sony - ULT Wear 2 if…
Sony - ULT Wear 2 has the measurable edge on battery life h, weight g, supports ldac.
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 Bowers & Wilkins - Px8 wins
- No decisive advantages.
Why Sony - ULT Wear 2 wins
- ▲Battery life — 66.67% more. 50 h vs 30 h.
- ▲Weight — 65.00 g less. 255 vs 320.
- ▲Has LDAC.
Spec comparison
Design
| Spec | Bowers & Wilkins - Px8 | Sony - ULT Wear 2 |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 320 g | 255 glead |
| Water resistance | none | none |
Audio
| Spec | Bowers & Wilkins - Px8 | Sony - ULT Wear 2 |
|---|---|---|
| Driver sizeⓘ | 40 mm | 40 mm |
| Impedanceⓘ | 32 Ω | 32 Ω |
| Sensitivityⓘ | 111 dBlead | 100 dB |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Bowers & Wilkins - Px8 | Sony - ULT Wear 2 |
|---|---|---|
| Battery lifeⓘ | 30 h | 50 hlead |
| Fast chargeⓘ | true | true |
Connectivity
| Spec | Bowers & Wilkins - Px8 | Sony - ULT Wear 2 |
|---|---|---|
| Bluetoothⓘ | 5.2 | 5.3lead |
| Multipointⓘ | true | true |
| 3.5mm jack | true | true |
| LDACⓘ | false | truelead |
| aptX HDⓘ | truelead | false |
Frequently asked
Which has better battery life, Px8 or ULT Wear 2?+
ULT Wear 2 lasts 50 hours vs 30 hours.
Do Px8 or ULT Wear 2 have active noise cancellation?+
Both models have active noise cancellation.
Which supports LDAC, Px8 or ULT Wear 2?+
ULT Wear 2 supports LDAC; Px8 does not.