ANC is the main weakness. The open design limits sealing, so the effect is modest against chatter and steady noise and much less convincing against higher-frequency or sudden sounds, even if it appears somewhat improved over Buds 3.
Most reviewers describe the noise canceling as top-tier and often class-leading, especially for low-frequency rumble, but a few still prefer Apple or Bose in some real-world situations. Performance is very dependent on getting a tight seal with the tips. Sound Connect adds adaptive NC optimization plus auto ambient and voice passthrough options. Some reviewers still note the core ANC toggle feels more like on or off than truly granular, but the ambient controls are highly adjustable.
Android compatibility is strong, and Galaxy phones get the most complete experience. Non-Samsung Android users still get meaningful control through Samsung's software, but the best extras remain Galaxy-first.
Samsung's settings integration and Wearables app expose useful controls, EQ options, and ANC adjustments. The software feels feature-rich, though some advanced features stay exclusive to Galaxy phones.
Sony’s Sound Connect app is central to the experience, offering seal tests, device priority, EQ, and many feature toggles. It enables deep customization, but some users want a cleaner, more straightforward layout.
Latency and sync are generally reported as good for video and casual gaming, especially with LE Audio features on compatible devices. Some modes are described as beta or device-dependent, so results can vary by source device.
Bass is a standout strength, with reviewers repeatedly calling it punchy, warm, and satisfyingly deep for an open-fit earbud. It is not as textured as the Pro model, but it gives the Buds 4 a lively, full sound.
Bass is described as deep, rich, and punchy with better control than prior generations, though some call it intentionally boosted. EQ tools make it easy to rein in low-end weight or add more slam.
Battery life is acceptable rather than exceptional at roughly 5 to 6 hours from the buds and up to 30 hours with the case. Reviewers treat endurance as serviceable, not a category advantage.
Battery life is commonly reported around the quoted 8 hours with ANC and roughly 24 hours including the case, with some testing exceeding the claim and other heavy-use tests landing closer to 7 hours. Overall longevity is considered solid but not a generational leap.
Connectivity looks strong overall, helped by Bluetooth 6.1 and solid range in real-world use. The bigger limitation is not dropouts but that the smartest switching behavior is mostly reserved for Samsung-centric setups.
Connectivity is usually rock-solid and improved over prior models, helped by an updated antenna and device-priority settings. A few testers report occasional drops in crowded areas when prioritizing sound quality, with stability mode reducing issues.
Build and finish are seen as more refined than the previous generation, with a more polished stem design and cleaner execution. The Buds 4 feel premium enough for the price, though not especially rugged.
Build quality is typically described as premium, with better grip textures and durability touches like improved hinges. Reviewers rarely report concerns beyond case magnet confidence in a few impressions.
The case earns positive marks for its flatter layout, translucent lid, and practical physical pairing button. It feels useful and better thought out than a generic accessory shell.
The case redesign draws mixed reactions: many like the matte texture and flat surfaces, while others dislike the taller, blockier shape. Magnet strength and wireless-pad fit are occasional complaints, but pocketability remains good.
Charging options are praised for USB-C and Qi wireless, plus quick-charge top-ups that deliver about an hour from a few minutes. A few reviewers note the case shape can sit awkwardly on some wireless pads, so charger compatibility can matter.
Codec support is broad for the class, commonly listed as SBC and AAC plus LDAC and LC3/LE Audio with Auracast readiness. iPhone users are typically limited to AAC, while Android users get the most benefit.
Comfort is one of the Buds 4's biggest wins, especially for listeners who prefer open-fit earbuds or have smaller ears. The only caveat is that the looser fit can require occasional readjustment.
Many reviewers can wear the XM6 for hours or a full workday, but comfort is more variable than some rivals. Protrusion, sleeping discomfort, and foam-tip feel are the most common complaints.
Design feedback is favorable overall: slimmer stems, a cleaner case, and a more polished look improve the presentation. The main knock is that the styling still feels very close to Apple's template.
Design shifts to a more minimalist, matte look with improved grip and fewer flashy accents. Some find the buds and case plain or bulky, but most agree the finish is practical and modern.
Tip options usually include four sizes and foam-style material that boosts isolation, but comfort is polarizing. Multiple reviewers suggest third-party silicone tips to improve comfort or seal, and a few still want a larger size option.
EQ flexibility is unusually strong for mainstream earbuds, with both a multi-band equalizer and preset options available. This gives listeners real room to tailor the sound signature.
The 10-band EQ is widely praised for giving meaningful control over the sound, including taming bright treble or tuning bass. Find My EQ-style tools and presets make it approachable for non-tweakers.
Included accessories are adequate but basic, usually focused on multiple foam tip sizes and a short charging cable. Several reviews wish for more tip materials or more generous extras at the price.
The Buds 4 separate vocals, synths, percussion, and layered mixes well for the class. They are not hyper-analytical, but they rarely sound congested or smeared.
Layering and instrument separation are repeatedly noted as strong, especially on busy tracks where many earbuds smear details. Imaging and placement remain stable with a good seal.
LDAC is repeatedly called a major advantage for Android listeners who want higher-resolution wireless audio. Reviewers also note it is not available to iPhone users.
Noise reduction during calls performs better than expected and can suppress loud background noise effectively. The tradeoff is that strong processing can make the speaker sound a bit digitized.
Noise rejection is a standout: beamforming and sensors help suppress background noise and wind so callers hear less of the environment. Even when voice tone is only average, most reports agree background suppression is strong.
Call quality is good in quiet spaces and usable in noisier ones, but it is not best-in-class. Voices remain understandable, though they can sound slightly muffled or processed compared with stronger premium rivals.
Call quality is often described as excellent for earbuds, with clear articulation indoors and solid performance on the go. A minority of reviewers still report merely average or slightly muffled voice capture compared with top competitors.
Midrange tuning is clear and well judged, keeping vocals and core instruments present even with the Buds 4's fuller bass. This helps the earbuds sound richer than many entry-level competitors.
Midrange and vocals are frequently called clearer and more forward than older Sony generations, with good texture and layering. Some listeners may want to slightly tame upper-mids via EQ depending on preference.
Basic listening works across devices, but the overall experience is plainly Samsung-centric. iPhone users and people mixing Apple, Windows, and Galaxy hardware lose access to several of the best features.
Compatibility across iOS and Android is solid, but the feature balance favors Android for LDAC and some spatial features. Apple users may miss tighter ecosystem integrations and may prefer AirPods for convenience.
Automatic switching is strongest inside the Galaxy ecosystem and notably less convenient elsewhere. Mixed-device users should expect more manual intervention than they would want at this price.
Multipoint is widely reported as reliable for switching between a phone and laptop with minimal lag. It is frequently highlighted as a key work-and-travel convenience feature.
Passive isolation is weak because the open design does not create a proper seal. That physical limitation is a big reason the ANC never becomes truly class-competitive.
The stock foam-style tips deliver strong passive isolation and help the buds feel like a quiet-zone switch. Fit and comfort vary, and multiple reviewers report better results after swapping to third-party tips for a tighter seal or softer feel.
Portability is generally strong for a flagship: the case stays pocketable, and many reviewers find it easy to carry daily. The tradeoff is a taller case and buds that can protrude more than some competitors.
Preset profiles and EQ wizards are described as useful starting points, with soft/clear/heavy-style options commonly referenced. Most power users still prefer manual tuning, but the presets are considered above average.
Sensors like ear detection, head gestures, and adaptive features are commonly described as reliable and easy to toggle in the app. These features add convenience for calls and auto playback behavior.
Sidetone is mentioned as available for calls so you can hear yourself, but the control is basic compared with the best implementations. It is helpful, though not a headline feature.
The matte finishes are frequently praised for resisting fingerprints and being easier to grip than glossy prior models.
Setup and customization are straightforward on Galaxy phones and still manageable on other Android devices through Wearables. The biggest friction comes from Galaxy-only options rather than a confusing interface.
Setup is generally easy, but the overall software experience is a frequent weak spot due to dense menus and many tap/gesture options. Several reviewers call the UI or feature automation unintuitive, while others find it improved compared with older Sony apps.
Sound quality is the clearest reason to buy the Buds 4. Across the reviews, the earbuds are praised for rich tuning, strong bass, clear vocals, and a presentation that beats many direct price rivals.
Sound is consistently praised as refined and engaging, with strong detail retrieval for a mainstream-tuned true wireless. A few listeners prefer the last bit of precision from rivals, but the overall tuning quality is a highlight across reviews.
For everyday earbuds, the Buds 4 sound fairly open and spacious, especially with higher-quality Galaxy playback modes enabled. They do not sound huge, but they avoid the boxed-in feel common at this tier.
Multiple reviews highlight a wide, layered soundstage with strong imaging that feels natural rather than artificial. Separation and left-right placement are commonly cited strengths.
Spatial audio is present as a headline feature, but clear enthusiasm is limited. It adds another box to the feature list more than it defines the Buds 4 listening experience.
Spatial audio support exists via Sony formats and platform-specific options, but availability and streaming-service support are inconsistent. Several reviewers call spatial features secondary to the core strengths of ANC and sound.
Fit stability is acceptable for regular daily use, but the open shape can shift enough to require adjustment. This is not the best pick for people who prioritize a locked-in feel.
Stability is generally strong for commuting and gym use when fit is correct, with foam tips helping seal retention. Some reviewers still hesitate to recommend them for running or high-impact movement due to the lack of stabilizing wings and fit variability.
Touch and stem-based controls are a strength. Reviewers repeatedly call them easy to locate, responsive, and customizable, with the flatter stem helping usability.
Touch controls are usually described as responsive and highly customizable, with reliable tap registration. The main criticism is usability: some gestures require many taps or can be triggered accidentally during adjustment.
Transparency/ambient mode is widely improved with less hiss and more natural volume, and features like Quick Attention and voice passthrough help for quick chats. Several comparisons still call Apple’s transparency more natural, and some users hear their own voice as slightly occluded.
Treble comes through cleanly with good detail and vocal presence. Reviewers do not describe it as harsh or thin, which helps the Buds 4 avoid sounding brittle despite their lively tuning.
Treble is more energetic and airy than previous models, adding detail and space, but it can read as bright or slightly metallic for sensitive listeners. The 10-band EQ and softer presets help smooth it out.
USB-C charging is standard and consistently mentioned as the primary wired charging method for the case.
Voice assistant support is solid on paper, with access to Bixby and Gemini plus Galaxy-focused conveniences. It adds real hands-free utility, even if reviewers do not treat it as the product's main selling point.
Voice assistant features are present, but reviewer impressions are mixed, with some noting inconsistent announcements or limited app support. Most reviews treat it as a nice-to-have rather than a primary reason to buy.
IP54 is enough for sweat and light splashes, making the Buds 4 workable for everyday workouts and commuting. Still, the rating is not especially rugged and is a downgrade from tougher earlier protection.
The IPX4 rating is routinely cited as suitable for sweat and light rain. Reviewers consistently warn it is not intended for submersion or heavy water exposure.
Weight is generally described as light with improved distribution, though a few testers still call the buds slightly top-heavy. Most find fatigue minimal during long sessions once fit is dialed in.