Sennheiser HDB 630 vs Sony WH-1000XM4

Sennheiser HDB 630

The HDB 630's clearest weakness relative to its $500 rivals. Reviewers agree passive isolation is good, but active cancellation is the weakest of the premium flagships — outclassed by Sony, Bose and Apple, particularly in the mid frequencies where voices and chatter sit.

• SoundGuys says the real improvement over previous Sennheisers is the passive isolation, not the ANC, and that achievable noise attenuation varies significantly with fit.
• In SoundGuys' lab test the HDB 630 reduced outside noise by an average of 83%, versus 87% for the Sony WH-1000XM6.
• RTINGS notes the very lowest rumbles of a bus or plane engine can still creep in and mid-frequency attenuation is weaker than competitors, though most everyday noise is heavily reduced.
• Crinacle calls the ANC the biggest weakness of the 630 — absolutely outclassed by the 'big three' for maximum isolation.
• The Headphone Show steers buyers whose top priority is cancelling noise toward the Sony WH-1000XM6 instead.
• RecordingNOW says the noise cancelling and build quality are the two areas keeping the HDB 630 from a perfect score.
• Running ANC at 100% applies very high acoustic pressure on the ears — one reviewer dialled it down to 75% for comfort.
• Switching on transparency (passthrough) mode noticeably degrades sound quality — bass loses power and volume drops, because the processor favours the wired/clean path.
• Owner take: one Reddit user finds the ANC fine for everyday use but notes that on flights it can cause headaches and is more annoying to toggle than rivals.

Sony WH-1000XM4

The XM4's headline strength: industry-leading ANC at launch via the QN1 chip and dual mics per cup, with smart adaptive behaviour. It still tunes out office and travel noise as well as almost anything in its price class.

• Sony's QN1 processor with two mics on each earcup delivers what Sony billed as its best-ever noise-cancelling, automatically optimising for ambient conditions.
• Outstanding noise isolation thanks to the ANC plus a comfortable, premium design — still worth checking out even after the XM5 replaced it.
• Adaptive Sound Control senses whether you're sitting, walking, running or in transit and adjusts ANC to the activity automatically.
• For an 8-10 hour office day the ANC reliably tunes out talking and loud noise — a standout for work environments.
• The AirPods Max slightly edge the XM4 on raw noise-cancelling, but the XM4 is lighter, has a far better case and is $200 cheaper.

Sennheiser HDB 630

At ~311g the HDB 630 has plush, beefed-up padding and folds for travel, and most reviewers find it comfortable for long sessions with a lighter clamp than the Momentum 4. The recurring criticism is the mostly-plastic build, which several reviewers say feels under-premium for a $500 headphone, and ear pads that are not the most spacious for larger ears.

• At 311g (up from the Momentum 4's 295g) the extra mass is barely noticeable and comes from significantly beefed-up padding.
• The Headphone Show finds the HDB 630 more comfortable than the Momentum 4 because the clamp force is lighter and the headband distributes pressure more evenly.
• Picky Audio notes the ear pads still aren't the most spacious — ears touch the inside — but says it's easy to get used to and wear either headphone for long periods.
• One comparison reviewer found the HDB 630 needs a short break after about 2 hours of wear, where the lighter 263g Bose QC Ultra can be worn for hours without one.
• Joshua Valour likes the headphones but wishes the build quality felt a little more premium for $500.
• BrandsWalk wishes the design were more premium at the price — even just swapping plastic for metal on the headband — but rates it the best Sennheiser of recent years.
• Super Review points out the cups look like aluminium but are actually plastic, and the reviewer wishes they were finished in plain black.
• Moon Audio praises exceptional all-day comfort, premium Japanese leatherette pads, a fingerprint-resistant matte finish and a travel-friendly folding design.
• RTINGS warns the HDB 630 may not be the best choice for people who wear thicker-framed glasses, as the seal can be affected.
• GadgetryTech notes generous ear clearance — about 5mm — which makes the difference between taking the headphones off mid-flight or leaving them on for hours; aftermarket pads (e.g. Wicked Cushion freeze pads) expand the cavity further at the cost of ~50g of added weight.

Sony WH-1000XM4

The XM4 keeps the XM3's understated, lightweight design and superb comfort for long sessions, folds for travel and ships with an excellent hard case — the build holds up for years, with warm ears the only common gripe.

• Design tweaks make the XM4 look slightly more lux and even more comfortable to wear for long stretches than the XM3.
• Comfortable enough for full workdays — barely noticeable where other headphones bother the ears after 20 minutes.
• After a year of heavy use the wear-and-tear is essentially non-existent and they don't wear you out — superb value.
• Lighter than the AirPods Max with a much better hard carrying case; folds flat for travel (the XM5 does not).
• Like most over-ears in this class the faux-leather pads aren't very breathable — ears get warm after about 6 hours.

Sennheiser HDB 630

An unambiguous strong point. Sennheiser rates the HDB 630 at up to 60 hours with ANC on, and independent battery tests confirm it lands in the 53-54 hour range — roughly double the Sony WH-1000XM6 and triple the AirPods Max. A 10-minute quick charge returns ~7 hours and a full charge takes only 1.5-2 hours.

• Sennheiser rates the HDB 630 at up to 60 hours of playback per charge, with a 10-minute charge providing hours of playback in a pinch.
• In SoundGuys' standardised battery test the HDB 630 lasted 53 hours 46 minutes with ANC on.
• RTINGS measured just over 54 hours with ANC on against Sennheiser's 60-hour claim, and confirmed a ~1.5 hour full charge.
• Picky Audio gave battery a 10/10 — 60 hours advertised with ANC on, 10 minutes for 7 hours of playback, and a 2-hour full charge from dead.
• Battery life drops to about 45 hours when using the BTD 700 dongle in its highest-quality mode — still far ahead of rivals.
• GadgetryTech notes a full charge takes about 2 hours, where rival headphones often take 1.5-2 hours to reach only half their (much shorter) battery life.
• RecordingNOW frames it directly: the HDB 630's 60 hours is double the Bose QC Ultra Gen 2's 30 hours and triple the AirPods Max's 20.
• Owner take: a Reddit user reports going three months between charges in light use, with reliable standby behaviour.
• The lithium battery is rated for around 500 charge cycles before degrading to ~80% capacity — but it is not user-replaceable, which some see as planned obsolescence at this price.

Sony WH-1000XM4

30 hours with ANC on (≈38 with it off), a 10-minute quick charge for ~5 hours, and ~3 hours for a full charge. Real-world tests confirm the rating; after ~3 years it settles to roughly 24 hours.

• Rated up to 30 hours with ANC on; a 10-minute quick charge gives up to 5 hours of playback.
• Real-time test averaged ~31 hours with ANC on — right in line with the 30-hour claim.
• Confirmed over 8-9 months of use: ~38 hours ANC off and a true ~30 hours ANC on.
• Full 0-100% charge takes roughly 3 hours; one tester filled them in ~20 minutes from dead on a high-watt charger.
• After 3 years, continuous-listening battery dropped from ~38 hours out of the box to ~24 hours — still plenty for most.

Sennheiser HDB 630

A weak spot. Reviewers say call and microphone quality is mediocre and that the mic hardware is optimized only to about 10kHz, so even the BTD 700 dongle's wideband voice codec brings little real-world improvement. Fine for casual calls, not for serious conferencing or recording.

• jakkuh's verdict: the HDB 630 is excellent unless you need to record audio with the mics — in which case just buy a dedicated microphone.
• Weekend Gear Guide explains the mic frequency response is optimized for 50Hz-10kHz, so the BTD 700 dongle's super-wideband voice codec can't deliver its full benefit.
• In a three-way call test against Bose and Sony, the HDB 630 scored equal overall — solid but not a standout for voice pickup.
• The Headphone Show says the mics aren't perfect — you'd still want a standalone microphone — but the progress is visible.
• GadgetryTech reports USB-microphone issues across platforms — including on PlayStation — that they hope a firmware update will address.
• Careful Optimist notes a useful counterweight: you can test and tune call quality yourself through the companion app and adjust settings to taste.

Sony WH-1000XM4

The XM4's enduring weak spot. Microphone/call quality barely improved over the XM3 and is the most consistent criticism — fine for casual calls, frustrating for conference calls.

• Mic-quality test: the XM4 didn't do much better than the XM3 — it doesn't justify an upgrade on microphone quality alone.
• Owner reports call quality is poor for conference calls — crackling and audio dropouts.
• Frequent complaint: the microphones are the one area people consistently call terrible on these otherwise excellent headphones.
• Speak-to-Chat / Quick Attention help during conversations, but many users just lift a cup or remove the headphones rather than rely on the mics.
• Despite the quirky mic issues, the balanced audio and strong ANC still make them worth getting if you mostly consume media rather than take calls.

Sennheiser HDB 630

The Smart Control Plus app is a genuine highlight — its 5-band professional parametric EQ is widely called the best in any wireless headphone. Bluetooth 5.2 with aptX Adaptive, four ways to connect, and a 30ms low-latency gaming mode are all positives, though touch controls are the slowest of the premium pack and early units had multipoint bugs.

• The Smart Control Plus app offers a professional 5-band parametric EQ — you can adjust each band's frequency and Q factor, add high/low shelves, and use undo/redo; Picky Audio calls it the best EQ available right now.
• GadgetryTech calls the parametric EQ massive — Sennheiser already makes good-sounding products, and giving listeners the keys to custom-tune is a huge advantage.
• The app handles EQ, ANC modes, firmware updates and a find-my-headphones location feature; pairing is straightforward.
• There are four ways to connect — Bluetooth 5.2, USB-C wired, 3.5mm analog, and the BTD 700 dongle — covering essentially any source.
• The BTD 700 dongle has a low-latency gaming mode that drops latency to a claimed ~30ms — good enough for lag-free video and competitive gaming.
• Touch-and-hold swipe gestures vary volume precisely and work well; a 15-minute auto power-off helps preserve battery.
• Touch-control response is the slowest of the premium pack — about 0.8-1 second from touch to response, versus roughly half a second for Bose and Sony.
• On an early review unit the touchpad and wear detection were frequently inoperative, especially in multipoint mode — a likely early-firmware bug.
• Owner take: one Reddit user singles out the app as the area where the HDB 630 clearly justifies its premium over the Momentum 4.

Sony WH-1000XM4

Speak-to-Chat, wear detection, multipoint and a deep companion app are the XM4's smart-feature wins — the catches are that multipoint disables LDAC, aptX was dropped, and the app/firmware can occasionally annoy.

• New over the XM3: multipoint Bluetooth (two devices at once) and a proximity sensor for wear-detection auto-pause/resume.
• Multipoint works perfectly switching between iPhone, Mac and iPad — a genuinely seamless everyday convenience.
• Speak-to-Chat auto-pauses music when you talk, with a configurable 15/30/60-second resume — clever, though some find it triggers too easily and switch it off.
• Bluetooth 5.0 with SBC/AAC/LDAC; aptX was dropped versus the XM3, and a 3.5mm jack plus USB-C are included.
• Headphones still receive over-the-air updates that have improved the noise-cancelling tech over time.

Sennheiser HDB 630

At a $489-500 launch price the HDB 630 sits exactly alongside the Sony WH-1000XM6, Bose QC Ultra and AirPods Max. Reviewers frame it as the pick for buyers who prioritise sound, battery and wired flexibility — and the wrong pick for buyers who want the best ANC or a luxe build.

• SoundGuys: while it doesn't take the crown for best ANC ever tested, the HDB 630 sounds far better than the Sony WH-1000XM6, the Bose QC Ultra and the AirPods Max.
• The HDB 630 launched at $489-500, the same bracket as the Sony XM6, AirPods Max and B&W PX7 range.
• The Headphone Show recommended the HDB 630 as the ANC headphone to get in its buying guide — though it concedes the Bose QC Ultra is more impressive in certain ways, making it a genuinely difficult choice.
• Crinacle loves the 630 as an audiophile but cautions that the average buyer who prioritises ANC should still consider the big three.
• Headphones Pro Review calls it the most honest answer a wireless headphone has given at this price — 60 hours of battery, a $60 dongle included and a mastering-grade parametric EQ.
• Versus the cheaper Momentum 4 (~$300-350), reviewers say the HDB 630 is a clear sonic step up but the Momentum 4 remains one of the best values for buyers who don't need the new app, EQ and wired hi-res features.
• Owner take: a Reddit user who tested three $500 flagships found the HDB 630 the best-sounding of the trio but ultimately kept the Bose QC Ultra for its better blend of ANC, comfort and connectivity.
• Owner take: a Reddit user calls the HDB 630 the best they've ever heard over Bluetooth when shopping for an AirPods Max alternative.

Sony WH-1000XM4

Launched at $349 alongside the XM3's price, the XM4 is now routinely $198-260 — making it, years on, one of the best-value premium ANC headphones and a frequent pick over the pricier XM5.

• Launched at the same $349 price as the XM3 did — and is now frequently discounted well below that.
• Among the most popular and well-regarded wireless headphones you can buy; the XM5 is a premium upgrade at a more premium price.
• Even 5+ years on, with a ~$250 price gap to the XM6 and street prices under $200, the XM4 remains excellent value and many prefer it to the XM5.
• Now around $250 new / ~$200 used — more affordable than ever and a fantastic option, especially refurbished.
• The staple recommendation for the average buyer — still ~$50 cheaper than the XM5 and they fold, which the XM5 doesn't.