Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Bang & Olufsen - Beoplay HX | Sony - WH-CH720N |
|---|---|---|
| Weight | 285 g | 192 g |
| Driver size | 40 mm | 30 mm |
Between the Beoplay HX and WH-CH720N, the Beoplay HX comes out ahead in driver size, while the WH-CH720N wins on weight. Overall, the Beoplay HX scores 72.3 and the WH-CH720N scores 71.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (72.3 vs 71.4). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Beoplay HX if you care most about driver size. The biggest gaps in its favor are driver size. The single most decisive one: Driver size — 33.33% more. 40 mm vs 30 mm.
Pick the WH-CH720N if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 93.00 g less. 192 vs 285.
Both ship with comparable battery life, 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: Bang & Olufsen - Beoplay HX or Sony - WH-CH720N?
Bang & Olufsen - Beoplay HX leads the current Mars Score by 0.9 points.The more useful decision is the trade-off behind that result: compare driver size, weight against the way you will actually use the product.
Choose Bang & Olufsen - Beoplay HX if…
Bang & Olufsen - Beoplay HX has the measurable edge on driver size mm.
Choose Sony - WH-CH720N if…
Sony - WH-CH720N has the measurable edge on weight g.
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 Bang & Olufsen - Beoplay HX wins
- ▲Driver size — 33.33% more. 40 mm vs 30 mm.
Why Sony - WH-CH720N wins
- ▲Weight — 93.00 g less. 192 vs 285.
Spec comparison
Design
| Spec | Bang & Olufsen - Beoplay HX | Sony - WH-CH720N |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 285 g | 192 glead |
| Water resistance | none | none |
Audio
| Spec | Bang & Olufsen - Beoplay HX | Sony - WH-CH720N |
|---|---|---|
| Driver sizeⓘ | 40 mmlead | 30 mm |
| Impedanceⓘ | 21 Ω | 48 Ωlead |
| Sensitivityⓘ | 96 dB | 100 dBlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Bang & Olufsen - Beoplay HX | Sony - WH-CH720N |
|---|---|---|
| Battery lifeⓘ | 35 h | 35 h |
| Fast chargeⓘ | true | true |
Connectivity
| Spec | Bang & Olufsen - Beoplay HX | Sony - WH-CH720N |
|---|---|---|
| Bluetoothⓘ | 5.1 | 5.2lead |
| Multipointⓘ | true | true |
| 3.5mm jack | true | true |
| LDACⓘ | false | false |
| aptX HDⓘ | truelead | false |
Frequently asked
Which has better battery life, Beoplay HX or WH-CH720N?+
WH-CH720N lasts 35 hours vs 35 hours.
Do Beoplay HX or WH-CH720N have active noise cancellation?+
Both models have active noise cancellation.
Which supports LDAC, Beoplay HX or WH-CH720N?+
Neither supports LDAC.