Between the QuietComfort Ultra 2 and WH-CH720N, the QuietComfort Ultra 2 comes out ahead in driver size and spatial audio, while the WH-CH720N wins on weight and battery life. Overall, the QuietComfort Ultra 2 scores 64 and the WH-CH720N scores 61.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (64 vs 61.4). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the QuietComfort Ultra 2 if audio quality and feature breadth (ANC, codecs, multipoint) are the lead criteria for your purchase. The biggest gaps in its favor are driver size, spatial audio.
Pick the WH-CH720N 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 weight, battery life.
Both ship with comparable active noise cancellation, multipoint, ldac, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Bose - QuietComfort Ultra 2 wins
- ▲Driver size — 16.67% more. 35 mm vs 30 mm.
- ▲Has Spatial audio.
Why Sony - WH-CH720N wins
- ▲Weight — 61.00 g less. 192 vs 253.
- ▲Battery life — 16.67% more. 35 h vs 30 h.
Spec comparison
Design
| Spec | Bose - QuietComfort Ultra 2 | Sony - WH-CH720N |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 253 g | 192 glead |
| Water resistance | none | none |
Audio
| Spec | Bose - QuietComfort Ultra 2 | Sony - WH-CH720N |
|---|---|---|
| Driver sizeⓘ | 35 mmlead | 30 mm |
| Impedanceⓘ | 32 Ω | 48 Ωlead |
| Sensitivityⓘ | 98 dB | 100 dBlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | truelead | false |
Battery
| Spec | Bose - QuietComfort Ultra 2 | Sony - WH-CH720N |
|---|---|---|
| Battery life | 30 h | 35 hlead |
| Fast chargeⓘ | true | true |
Connectivity
| Spec | Bose - QuietComfort Ultra 2 | Sony - WH-CH720N |
|---|---|---|
| Bluetoothⓘ | 5.4lead | 5.2 |
| Multipointⓘ | true | true |
| 3.5mm jack | true | true |
| LDACⓘ | false | false |
| aptX HDⓘ | truelead | false |
Frequently asked
Which has better battery life, QuietComfort Ultra 2 or WH-CH720N?+
WH-CH720N lasts 35 hours vs 30 hours.
Do QuietComfort Ultra 2 or WH-CH720N have active noise cancellation?+
Both models have active noise cancellation.
Which supports LDAC, QuietComfort Ultra 2 or WH-CH720N?+
Neither supports LDAC.
Spec-level deep dives
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