
Bose QuietComfort Ultra
Score: 86/100
Bowers & Wilkins Px7 S3 Blue
Score: 87/100Rankings

The Px7 S3 offers high-resolution audio with 40 mm bio-cellulose drivers, eight-mic ANC and 30 hours of battery backed by 15-minute quick charge, plus Bluetooth 5.3 with aptX Lossless support. Its 300 g weight, tight clamping and non-foldable design can be uncomfortable for extended wear. Best suited for travelers and audiophiles who value sound fidelity and robust features.

The Bose QuietComfort Ultra headphones combine premium active noise cancellation, spatial Immersive Audio, and CustomTune personalization, while offering up to 24 hours of playback. Their bulkier build and lack of water resistance may deter active users. They excel for travelers and audiophiles desiring top-tier ANC and spatial sound.
| Attribute | ![]() | ![]() |
|---|---|---|
24 hours | 30 hoursbest | |
— | 40 mmbest | |
| ↓ lower better | 250 gbest | 300 g |
— | 33 Ωbest | |
| ↓ lower better | 180 minutes | 15 minutesbest |
9 mbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Connectivity(1) | ||
Supported Audio Codecs | SBC, AAC | aptX Lossless, aptX Adaptive, aptX HD, AAC, SBC |
Battery & Power(2) | ||
Battery Life (hours) | 24 hours | 30 hours |
Charging Time (minutes) | 180 minutes | 15 minutes |
Build & Design(3) | ||
Weight (g) | 250 g | 300 g |
Dimensions (H×W×D) (mm) | 195x139x51 mm | 206x156x48 mm mm |
Ear Cushion Material | Protein leather | Memory Foam |

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

Professional reviewers commend the QuietComfort Ultra for its best-in-class ANC, comfortable lightweight build, and innovative CustomTune calibration that keeps sound consistent across different fits. They also note the strong battery performance and robust Bluetooth 5.3 multipoint connectivity, while flagging the bulkier form factor, lack of water resistance, and the fact that a newer generation has already been released.
Users consistently praise the headphones for their comfort, long battery life, and effective noise cancellation that makes commuting and travel pleasant. Common complaints revolve around the bulkiness for active use, occasional bass variability depending on head shape or glasses, and the missing IP rating for sweat-prone activities.

“won't "drag ears down" even after hours”




Professional reviewers commend the Px7 S3 for its refined, high-resolution audio, powerful 40 mm bio-cellulose drivers, and robust ANC implementation. They also praise the extensive codec support, long battery life with rapid charging, and the high-grade 24-bit DAC/amplifier. Criticisms focus on the relatively tight clamping force, a slightly pressurized ANC feel, and the headphone's heavier weight compared with leading competitors.
Everyday users echo the professional praise for sound quality and battery longevity, noting the headphones feel secure and comfortable for commuting. Recurring complaints center on the clamping pressure during extended wear, a sense of pressurization from ANC, and the product's heft relative to lighter alternatives.