Compare Bowers & Wilkins PX7 S3 Headphones vs Sennheiser MOMENTUM 4 Wireless Headphones

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.

ANC effectiveness is mixed across sources: some call it very good and close to leaders, while others measure it as clearly behind top Bose and Sony options, especially for tougher noise scenarios. ANC adjustability is widely praised thanks to sliders, adaptive behavior, and app-driven profiles and zones that let you tune isolation versus awareness.

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

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.

The Smart Control app is widely viewed as feature-rich with EQ and zone-based behavior, but some reviewers dislike setup friction, pop-ups, or account requirements for certain features.

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.

aptX support is a notable plus cited by several reviews, helping Android users with more consistent performance compared to AAC in many setups.

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

Audio-video sync is generally reported as strong for video watching, with latency management helped by codec selection in some advice-focused reviews.

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.

Bass is commonly described as elevated and impactful without constant bleed, but several reviewers note it can be a bit much stock and may benefit from EQ to reduce boom or flab in some tracks.

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.

Battery life is the most consistent standout: multiple sources cite roughly 50 to 60 hours or more with ANC depending on test methods and usage.

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.

Bluetooth stability is generally solid with modern connectivity, though real-world reliability can still depend on device ecosystem and nearby previously paired devices.

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

Build quality is typically seen as solid but more plastic-heavy and less premium-feeling than metal-rich rivals; durability is considered fine with reasonable care.

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.

The single physical power and pairing control is sometimes criticized as finicky or confusing compared to simpler button-driven systems.

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.

One review criticizes the included analog cable as thin and less confidence-inspiring for travel wear and tear.

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

The carry case is usually praised as protective with storage for cables, but a few reviews call it larger than ideal for pack-light travel.

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

Charging is generally strong, with quick-charge claims and reasonable full-charge times; experiences vary slightly by power source and usage.

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.

Clamp force is often described as moderate and comfortable, but the lighter clamp can trade off with stability during movement-heavy activities.

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.

Codec support is strong for mainstream and Android use, including multiple aptX options and AAC, but it is not positioned around newer lossless Bluetooth standards.

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.

Comfort is frequently described as excellent, including long sessions and glasses-friendly padding, though a few users report headband pressure or fit quirks during extreme-length wear.

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

Design is commonly described as minimalist and understated; some like the clean look while others miss the more distinctive style of earlier Momentum models.

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.

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.

Earpads are commonly described as soft and comfortable, contributing to long-wear comfort; the softer seal may slightly reduce isolation for some.

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

Earcup rotation is praised in at least one review as smooth and helpful for fit, with cups lying flat for storage and neck rest.

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.

EQ customization is a meaningful strength across reviews, commonly used to tame bass, refine mids, or personalize the overall signature without major distortion issues.

Find My style tracking is described as lacking compared to Apple ecosystem features in at least one review.

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.

Measurements and listening impressions generally align on a well-tuned response for broad appeal, with small deviations (notably bass lift) that can be refined via EQ.

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.

Fit and adjustability are generally straightforward, though users are advised not to over-tighten because pressure points can develop.

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.

Accessories are generally generous, commonly including a case, charging cable, analog cable, and an airplane adapter, though one review notes a missing adapter compared to the prior generation.

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.

Instrument separation and imaging are commonly rated as strong for the category, with clear placement and good stereo definition, though not always a large leap over prior models.

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

LDAC is not supported and is repeatedly mentioned as the key wireless hi-res omission for enthusiasts.

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.

Even when pushed loud, multiple reviews note the sound stays clean, but the practical ceiling can feel lower than expected compared to peers.

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.

Noise rejection for calls is a frequent criticism, with several reviews noting background sounds can intrude; wind reduction features can help in some cases.

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.

Call quality trends average-to-good in quiet rooms, but multiple tests report reduced clarity and competitiveness when background noise is present.

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.

Midrange is generally clear, but some reviews call it less rich than Momentum 3 or slightly recessed depending on tuning, with vocals still remaining clean and present for most listeners.

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

Multipoint is supported and often convenient, but at least one lab test reports occasional glitches when other known devices are nearby, even though switching can be quick once connected.

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.

Passive isolation is a recurring weak point in several lab-style reviews, sometimes attributed to a softer seal; others find it adequate in real travel use.

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.

Portability is good but not best-in-class: cups lie flat and cases can be compact versus some rivals, yet the design does not fully fold into the headband in some reports.

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.

Preset modes and guided personalization features are generally useful and can improve tonality for specific tastes, though some presets may limit manual slider control.

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

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

Wear sensors and auto pause features are frequently mentioned as useful quality-of-life additions, though auto power behaviors can be inconsistent for some users.

Sidetone is praised in at least one review for making calls feel more natural by letting you hear your own voice more clearly.

Surface smudging is mentioned as manageable: oils can show with regular handling but a quick wipe restores a clean look.

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

Setup and daily control are generally easy once configured, but a few reviewers report initial friction in the app experience or connection steps.

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.

Sound quality is a consistent highlight: most reviews describe an engaging, detailed presentation that competes strongly at the price, often with a fun, slightly bass-forward tilt and strong clarity after light EQ if desired. Wired audio can sound tighter and more stable than Bluetooth in some reports, but at least one review warns wired listening can degrade significantly if the headphones are not powered on.

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.

Soundstage is usually described as wide enough for an immersive feel, but depth can be limited and some tests describe the stage as more inside-the-cups than truly expansive.

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.

Spatial audio support is not a core strength in these reviews, with some calling it limited or weaker than ecosystem-driven alternatives.

Fit stability can be a weakness during vigorous movement due to moderate clamping, with at least one test noting issues beyond walking.

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.

Sustainability gets a small nod through minimalist, paper-forward packaging in at least one review, though it is not a dominant theme.

Touch controls are often described as intuitive and capable, but several reviews mention sensitivity, accidental triggers, or occasional glitches requiring app toggles.

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.

Transparency is adjustable and generally usable, but opinions vary: some like the control and naturalness, while others find it less crisp or overly amplified in busy spaces.

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.

Treble is frequently praised for detail and shimmer, though a few reviewers mention occasional brightness, fatigue, or a sharper peak that may bother treble-sensitive listeners.

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

USB-C is a key advantage: reviews highlight charging convenience and USB-C audio as a rare, practical feature for wired listening.

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

Volume output is sometimes reported as lower than competing flagships, leading some users to run near the top of the volume range.

Water resistance is effectively absent in practice: at least one review notes no IP rating and recommends avoiding rain.

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.

Weight is typically reported around the 290g range and perceived as manageable, though not the lightest in class and still a factor for ultra-long sessions for some users.