Compare SonoFlow SE HQ31 Wireless Headphones vs Bowers & Wilkins PX7 S3 Headphones

ANC is a real strength for the price. Most reviewers said it handles low-frequency noise very well and beats expectations for a budget model, even if it does not match Bose or Sony flagships. Mode control is flexible. Reviews repeatedly mention easy switching between ANC, transparency, and normal modes through the app or hardware button.

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 support looks strong. Reviewers specifically cited the Android app experience and LDAC activation on Android devices as working as expected.

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

The app is feature-rich but divisive. Several reviewers liked the EQ, firmware, and mode controls, while others complained about crashes, lag, ads, and rough translation.

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

Low-latency performance is generally solid. Reviewers who tested gaming or video playback reported little to no obvious lag, though one review found the mode made little audible difference.

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

Bass is usually described as punchy, warm, and enjoyable. It has enough emphasis for pop, hip-hop, and EDM, but it can also sound a bit overboosted depending on tuning and preset.

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 one of the biggest reasons to buy these headphones. Nearly every review praised the 60 to 90 hour endurance as exceptional for the class.

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 performance is consistently reliable. Reviews noted fast pairing, stable connections, and good range with few complaints about dropouts.

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 quality lands above average for the price but not premium. Most reviewers found the plastic shell solid enough, while a few called the frame or hinges wobbly or plainly budget-grade.

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

Hi-res playback support is a plus here. LDAC and high-res audio claims were repeatedly highlighted, though reviewers focused more on wireless playback than any dedicated DAC behavior.

Physical controls work, but they are not especially intuitive. The biggest complaint is the reversed track-skip behavior on the volume rocker, even though button feel itself is usually decent.

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 included cable is a weak point. Reviews that mentioned it called the USB cable very short and more utilitarian than convenient.

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.

Accessory protection is minimal. Multiple reviews specifically noted that no carrying case or pouch is included.

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

Charging performance is very good. USB-C, fast-charge support, and short top-ups that return hours of listening time were all praised.

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

Clamp force is one of the main comfort complaints. Some users liked the secure fit, but several found the pressure too tight for longer sessions.

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 is excellent for the price. LDAC is widely mentioned, and one review also listed SBC and AAC alongside it.

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-session comfort is mixed. Some reviewers wore them for hours without issue, while others reported fatigue from clamp, heat buildup, or overall heft.

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.

The design is simple and modern but not especially luxurious. Color options and clean styling help, though several reviews still described the look as plainly budget-oriented.

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

Wired use adds some flexibility, but convenience is limited. Reviews mention USB-C wired mode rather than a normal 3.5mm setup, and the cable situation is not ideal.

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.

Padding quality is mostly a plus. Reviewers frequently described the ear pads as soft and pleasant, even when other fit-related comfort issues remained.

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.

The earcups rotate or lie flat, which helps both neck comfort and storage. Reviewers who mentioned it saw this as a useful portability feature.

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

EQ control is a strong feature. The app offers multiple presets and, in several reviews, a custom EQ that makes it easier to tune the sound to taste.

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.

Frequency balance is not especially accurate. Reviewers often heard boosted bass, dipped mids, or sharp or rolled-off treble, although a few still found the overall tuning enjoyable.

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 appears adequate. Reviews that mentioned sizing said the extenders allow a workable fit for larger heads.

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.

Hinge confidence is limited. The only detailed hinge-related comment described the cups and hinge area as too wobbly.

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.

The box contents are basic. Most reviews mention only the headphones, a short USB cable, and documentation, with no premium extras.

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

Instrument separation is decent rather than standout. One detailed review noted that the headphones can organize detail well enough to keep recordings coherent and not overly congested.

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.

The built-in mic is usable and often better than expected for the price. Call performance ranges from merely okay in quieter spaces to impressively clear in stronger reviews.

LDAC support is one of the model’s biggest spec advantages. It is repeatedly cited as a rare feature at this price.

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

Maximum loudness is not a strength. The few reviews that addressed it described limited headroom or some distortion concerns rather than effortless clarity at high volume.

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 mixed but often effective. Some reviewers praised the dual-mic ENC for cutting traffic and wind, while others said voices could still sound distant in 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 is better than expected overall. The strongest reviews praised clear, loud voice pickup, but a few others found performance only acceptable in quiet environments.

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 clarity is uneven. Vocals can sound forward and engaging, yet several reviewers also heard recessed or coarse mids depending on tuning and preset.

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 appears strong. One review specifically praised smooth switching between iOS, macOS, and Android devices.

Multipoint works well when used. Reviewers who tested dual-device pairing generally described switching as fast and seamless.

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

Passive isolation is respectable but not perfect. The seal is good enough for everyday use, though fit and cup size can limit isolation for some listeners.

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.

Portability is a plus. Several reviews highlighted folding or flat-laying earcups that make the headphones easier to carry around.

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.

The preset EQs are mostly useful. Reviewers liked having many options, though some felt only a subset of the presets were genuinely worthwhile.

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.

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

Sensor extras are very limited. One review explicitly noted the lack of wear detection or similar smart convenience features.

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

The matte finish appears to resist fingerprints well. Smudge resistance was only mentioned once, but it was a positive note.

Setup and software experience depend heavily on the reviewer. Some found pairing and app navigation easy, while others ran into buggy behavior and needed restarts.

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 quality is good for the money, not for purists. Most reviewers found the tuning enjoyable and competitive at the price, but several also wanted more refinement and realism.

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 better than expected for a cheap ANC headphone, especially with spatial audio on. Still, some reviewers found it only average or even narrow.

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.

Spatial audio is a pleasant bonus rather than a headline feature. Most reviews found it adds width or fullness, but it is not treated as a true premium immersive implementation.

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.

Fit stability is acceptable but not perfect. A secure clamp helps for normal use, though one review noted slipping during gym bench work.

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.

Transparency mode is a standout feature. Many reviewers said it sounds unusually natural and useful for conversations, outdoor awareness, and quick check-ins with the environment.

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 performance is mixed. Some reviews heard decent clarity, while others called the top end rolled off, sharp, or less refined than competitors.

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 support is a clear convenience win. It is consistently mentioned for charging, and several reviews also tie it to wired operation.

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

Voice assistant support is solid where tested. Siri and Google Assistant were reported to respond accurately through the hardware controls.

Volume output is merely adequate. Reviews that mentioned loudness either wanted more headroom or said the headphones can get reasonably loud, but it is not a standout strength.

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

Weight comfort is mixed. Some reviewers found them light enough for long wear, while others noticed the mass quickly and preferred lighter alternatives.

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.