Compare Bose QuietComfort Ultra Wireless Headphones vs Bowers & Wilkins PX7 S3 Headphones

ANC is consistently described as class-leading, excelling on planes, trains, and busy streets; a few note rare odd behavior with extremely loud peaks. Noise canceling is highly adjustable through modes and a 10-step slider, often with wind control, but several reviewers dislike the lack of a true ANC-off state.

ANC is repeatedly described as a meaningful improvement for B&W and effective for commuting and travel, but many reviews still place it behind Sony and Bose at the top end. Wind and higher-frequency voices can be weak spots in some scenarios. ANC mode control is straightforward (on, off, pass-through) and can be mapped to a quick-action button in some setups. Reviewers note fewer adjustment options than Sony-style multi-mode systems.

Android works well for basics, but best codec features depend on compatible Snapdragon hardware and may fall back to AAC on some popular phones.

Android compatibility is strong, especially thanks to codec breadth and aptX options. Several reviews contrast this with iOS being limited to AAC.

The Bose Music app is easy to navigate for modes, updates, and basic customization, but power users may find it simpler than competing apps.

The companion app is generally considered clean and functional, offering key controls and some ecosystem integration. Multiple reviewers still call it simpler than Sony-style apps and note missing power-user features.

aptX Adaptive/Lossless is a notable perk for supported phones, but real-world availability varies and some reviews warn of inconsistent handset support.

aptX support is repeatedly highlighted, including higher-end variants such as Adaptive and Lossless, making it particularly attractive for compatible Android and Snapdragon Sound devices.

Reviewers generally report good sync for video use, with latency described as not an issue for typical phone or laptop watching.

Bass is strong and punchy; fans call it controlled and fun, while detractors describe it as too heavy or less controlled without EQ.

Bass is consistently described as impactful and controlled rather than boomy, with strong definition. Some listeners find it bass-forward at higher volumes, while others want a bit more sub-bass weight.

Battery life is typically described as mid-pack (around 24 hours), with Immersive Audio often cutting it to roughly 18 hours; some find it acceptable, others call it a weakness.

Battery life is consistently cited around 30 hours with ANC on, which is solid but not a class leader versus marathon models. Real-world tests generally align with the rating. Multiple reviews note the battery is not user-replaceable, which limits long-term serviceability compared to fully repair-friendly designs.

Bluetooth connection is generally stable with good range, with occasional reports of finickiness on some computers.

Bluetooth performance is described as stable and reliable in most reviews, including in congested environments. A small number of users report occasional skipping or hiccups, suggesting rare environment or device-specific issues.

Build is seen as solid but not the most premium; a few report rattles or long-term wear concerns, while others find it durable enough for daily travel.

Build quality is consistently described as top-tier for the price, with premium materials, refined finish, and sturdy mechanisms.

Controls mix physical buttons with a touch strip; many like the simple layout, but some dislike multi-press functions and loud button clicks.

Physical buttons are a plus for many, with tactile, clicky controls that work with gloves. A few reviews call the buttons small or the control layout limited compared to feature-heavy rivals.

Included cables (USB-C to USB-C and USB-C to 3.5mm) are generally seen as premium and practical. A couple of reviewers suggest buying longer cables for desk or airplane use.

The hard, zippered carrying case is frequently praised as compact and protective, usually including storage for cables and accessories.

The hard case is repeatedly called excellent, with premium materials, good protection, and a useful magnetic compartment for cables.

Charging performance is strong, with fast-charge claims commonly cited and the ability to top up quickly for a few hours of listening.

Fast charging is a standout, with many references to short top-ups delivering multiple hours of playback.

Clamping force is usually described as gentle and well-judged; the comfort-focused clamp can reduce stability for vigorous movement.

Clamp is commonly described as moderate-to-firm, helping stability when walking. For some heads it can create pressure points, while others find it secure and comfortable after break-in.

Codec support centers on SBC/AAC plus Snapdragon Sound with aptX Adaptive/Lossless on compatible devices; Bluetooth 5.3 and LE Audio readiness are mentioned, though rollout varies.

Codec support is a major strength, with broad compatibility (including aptX variants) plus wired USB-C audio options. Several reviews also mention upcoming firmware features like LE Audio, Auracast, and spatial audio depending on region and timing.

Long-wear comfort is a standout: lightweight feel, soft cushioning, and glasses-friendly fit make it easy to wear for hours.

Comfort is a consistent highlight, with many reviewers wearing them for hours without fatigue. However, some report firm clamp, earcup heat, or fit variability, especially for glasses wearers or outdoor use.

Design is understated and modern with premium touches, but several reviewers call it low-key and wish it stood out more.

Design is frequently praised as sleek, understated, and premium, with a slimmer profile than prior generations and strong pride-of-ownership appeal.

Detachable cables and USB-C audio add flexibility for laptops and in-flight systems, even without a native 3.5mm jack on the earcup. Most reviews note the headphones typically need to be powered on for wired listening.

Ear pads are widely praised as plush, but some long-term use reports mention compression/divots and concerns about thin pleather longevity.

Earpads are usually described as plush and premium with good sealing. A few reviews suggest padding feels slightly less supportive than prior models and can get warm over time.

Swivel and rotation range are frequently noted as generous, helping the cups seal and sit flatter against the head for comfort and stability.

EQ is available but limited (often described as a 3-band slider with modest sensitivity), so deep tuning is not a strength.

The 5-band EQ is widely welcomed as a major improvement over earlier B&W EQ options and is enough to correct stock tuning. Several reviews still consider it limited versus more granular 10-band systems.

Tonal balance is described as neutral-with-warmth by several outlets, while others report noticeable swings and a more consumer-friendly curve. Overall, it is closer to balanced than purely V-shaped, but not a strict reference-flat tuning.

Headband adjustment is smooth and fits a wide range of head sizes, helping distribute pressure for comfort.

Headband adjustment is smooth and easy to dial in, and padding is generally praised. Some users note mild top-of-head pressure depending on head shape and fit.

The dual-hinge folding design improves packability; most find it sturdy, though pinch points and occasional rattles are mentioned.

Arms and hinge mechanisms are described as sturdy, with premium-feeling movement and good resistance. Long-term durability is generally expected to be strong based on materials.

Included accessories are viewed as generous for the segment, typically including a premium case and multiple cables for charging and wired playback.

Separation and imaging are strong, but a few sources mention channel matching or processing can affect spatial cues.

Instrument separation and layering are a standout, with reviewers repeatedly noting strong clarity in busy mixes and easy-to-track placement of vocals and instruments.

Multiple reviews point out LDAC is not supported, so LDAC-first Android users may need to choose a different model or use wired playback.

Clarity generally holds up at higher volumes, with multiple reviewers noting strong detail retention when turned up.

Even at higher volumes, the presentation stays largely clean and controlled, with low distortion noted in multiple reviews. The main caveat is that bass and treble emphasis can become more prominent if you listen loud.

Noise reduction for calls is often effective in busy environments, but some tests still capture background announcements or office noise.

Noise reduction on calls is effective at suppressing background noise, especially wind and street ambience in some demos. The tradeoff is occasional aggressive gating that can alter vocal tone.

Call quality reviews are mixed: some describe it as excellent with clear voice pickup, while others report graininess, robotic tone, or dropouts in meetings.

Call quality is generally solid, with clear voice pickup and good intelligibility. In very noisy or windy conditions, some tests report the voice can sound a bit muffled or less natural than top performers like Sony or AirPods Max.

Midrange is generally clear and present, though some note it can sit behind the bass depending on track and tuning.

Midrange is generally clean and detailed, but multiple reviewers describe it as slightly recessed in the stock tuning; EQ can bring vocals forward. Others highlight the mids as a core strength for clarity and realism.

Cross-platform use is strong overall, working well with iOS, Android, and computers for everyday listening.

Multipoint is supported and usually reliable, enabling easy switching between phone and laptop; switching behavior can be manual depending on use.

Multipoint is frequently praised as quick and seamless, with fast take-over when switching between phone and computer playback.

Large, plush pads create a strong seal that boosts passive isolation and supports the overall noise-reduction performance.

Passive isolation benefits from an easy-to-achieve seal and helps overall noise reduction. A few notes suggest fit, glasses, or positioning can change results noticeably.

Fold-up-and-flat portability is a key advantage, helping the headphones and case take up less space than some rivals.

Portability is mixed: the headphones lie flat and the case is slimmer than before, but they do not fully fold and can take more bag space than foldable rivals.

Preset EQ profiles exist (for example bass/treble focused presets), but the selection and granularity are limited compared with rivals.

True Sound and other presets are appreciated for a quick, consistent baseline, but reviewers note the preset lineup is not extensive and serious tuning relies on the manual EQ.

Earpads are removable/replaceable according to at least one review, which is a plus for long-term maintenance, though long-term pad wear and compression are still discussed.

Replaceable earpads are a notable plus for longevity, though some reviewers note replacement may require service or specific procedures.

Sensors enable wear detection, auto-pause/resume, and sleep/auto-off behavior that helps conserve battery, though detection can feel slow for some.

Wear-detect and related sensors are commonly mentioned, with adjustability in the app and improved reliability versus older generations in some reports.

The black finish can show fingerprints and smudges more than lighter colorways.

Setup is generally straightforward with fast pairing on supported devices; a few note slower on-head detection or reconnection in daily use.

Setup is generally easy, with quick pairing and a straightforward app experience. Firmware updates and feature rollouts are occasionally cited as timing-dependent.

Overall sound is widely described as rich, detailed, and engaging with a bass-forward tilt; some reviewers still prefer more neutral or more detailed rivals.

Across reviews, the PX7 S3 is praised as one of the best-sounding wireless ANC over-ears in its price range, with an engaging, high-end presentation. A minority note the tuning can feel unconventional until you EQ it. Wired listening via USB-C is supported and often described as clearer or more detailed than Bluetooth, though some reviewers hear only modest gains. A few notes mention wired operation may require power and can be finicky depending on source and cable.

Soundstage is above average for closed-back ANC headphones, and Immersive Audio can widen it further with varying success.

Soundstage is described as spacious and well-layered for a closed-back ANC headphone, though not the widest in class. Several reviews frame it as more focused or intimate than some rivals, with strong depth and imaging.

Immersive/spatial audio can widen the presentation for some content, but many find it inconsistent or overly processed and note the battery hit.

Spatial audio is mentioned as a planned or coming-soon feature in several reviews, but availability at launch is inconsistent. In current form, it is not a primary reason to buy.

Stability on the head is excellent for desk and travel use, but some reviewers report slipping/falling during dynamic workouts or bending.

Materials and serviceable parts (like pads and headband components) are positioned as more sustainable than fully disposable designs. Some reviews also emphasize vegan or leatherette options and longer-term repairability.

The touch volume strip/slider is often described as responsive and easy by feel, though some users report accidental volume jumps.

Transparency/Aware mode is repeatedly praised as natural and low-hiss, close to AirPods Max quality and especially useful for office awareness.

Transparency mode is often called natural and usable for announcements and quick conversations. Several comparisons say it is not the most open or bright in class, with some upper-frequency muffling.

Treble is typically detailed and crisp without harshness, though a few describe it as slightly distant or affected by processing.

Treble is widely called airy and detailed with good sparkle. At louder listening levels, a few reviews mention sibilance or sharpness, so treble-sensitive listeners may prefer a mild EQ cut.

USB-C is charging-only; lack of USB-C digital audio passthrough is a repeated complaint for a flagship-priced model.

USB-C implementation is strong, covering charging and audio, and enabling high-resolution wired playback with compatible sources.

Voice assistant access is typically supported via a customizable shortcut, making hands-free control convenient for many users.

Maximum volume output is described as very loud with ample headroom.

Volume output is strong, with several comparisons calling it louder than key competitors at the same device volume settings.

There is no IP rating, and multiple reviews advise against heavy sweat or rain exposure despite the headphones handling normal daily use.

Weight is generally considered light for the class (around 250g), contributing to reduced fatigue over long sessions.

At roughly 300g, weight is acceptable for the materials and feels lighter than some heavy flagships, but heavier than the lightest Sony/Bose options. A few reviewers notice shifting while moving.