
Bowers & Wilkins Px7 S3 Black
Score: 86/100
Bose QuietComfort Ultra Black
Score: 86/100Rankings

The Bowers & Wilkins Px7 S3 delivers audiophile-grade sound, strong active noise cancellation and a 30-hour battery, but its 1.1 kg weight and lack of a foldable design make it less travel-friendly. It excels for listeners who prioritize sound fidelity and ANC over portability. Best suited for audiophiles and frequent travelers who value premium build and long endurance.

The Bose QuietComfort Ultra (2nd Gen) builds on its predecessor with up to 45 hours of battery and ~87% noise reduction. However, inconsistent sound balance and no water-resistance keep it from being a universal upgrade. Best suited for frequent travelers and long-duration listeners.
| Attribute | ![]() | ![]() |
|---|---|---|
30 hoursbest | — | |
— | 45 hoursbest | |
| ↓ lower better | 1,134 g | 480 gbest |
| ↓ lower better | 15 minutesbest | 15 minutesbest |
40 mmbest | — | |
33 Ωbest | — | |
— | 9 mbest | |
8best | 1 |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Battery & Power(1) | ||
Battery Life (ANC On) (hours) | 30 hours | 30-37 hours |
Connectivity(1) | ||
Bluetooth Version | 5.3 | 5.4 |
Audio(1) | ||
Microphone Count | 8 | 1 |
Build & Design(1) | ||
Weight (g) | 1134 g | 480 g |
General(1) | ||
Warranty (years) | 2 years | 1 years |

Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the Px7 S3 as a refined upgrade with richer detail, deeper bass, wider soundstage and effective ANC, while noting its weight and lack of folding.
Everyday users rave about outstanding audio fidelity, effective ANC, long battery life and premium aesthetics, but complain about the 300 g weight, ANC pressure sensation and missing foldable design.

“Exceptional sound quality with high resolution, deeper bass, vocal clarity, wide soundstage, and tactile bass.”

“unexpected ANC heavyweight”

“ANC "best in the business" at 87% reduction”




Professional reviewers commend the QuietComfort Ultra 2nd Gen for its industry-leading ANC (about 87% noise reduction), marathon-length battery life, and plush, lightweight comfort. They also highlight the addition of Bluetooth 5.4 multipoint and Immersive Audio spatial modes as valuable upgrades. However, critics note that sound consistency varies with ear anatomy, the wired mic is missing, and the generational leap over the 1st-gen model is modest, which may limit the perceived upgrade value.
Everyday users echo the experts on the strengths: the ANC is praised as a travel essential, the comfort allows all-day wear, and the long battery with quick-charge is a daily convenience. Recurring complaints focus on inconsistent bass/mid balance across different ear shapes, the non-functional wired microphone, and the absence of water-resistance, with some reporting listening fatigue from a still bass-heavy profile.