Bowers & Wilkins Px8

RTINGS reads Bass Amount “Very Emphasized (5 dB),” Treble Amount “Slightly Underemphasized (-2 dB)” and Sound Signature “Warm,” measured on a B&K 5128 with ANC enabled, and lists “Prone to inconsistencies in audio delivery.” as its one headline con. SoundGuys, measuring on its own rig, reaches for the same word twice: “If I had to characterize the sound of the Bowers & Wilkins PX8 in a single word, it’d be “bizarre.” Not “bad,” but definitely unusual.” Its MDAQS panel scores Timbre 4.0 — its lowest of three — against Immersiveness 4.8, which is the dispute rendered as numbers.

⚠ vs. listeners — Both camps are describing the same headphone honestly, and the second rig names the mechanism. Measuring on a GRAS 43AG, Headphones.com found “two common results depending on the positioning of the headphone on the rig, with Position 2 being the most stable,” noted that “It looks to just be the strongest part of the ear gain region that shifts depending on that,” and warned that “it also means that this is likely to be received differently by different people.” A forum member's reply is the whole affair in one sentence: “Oh no, another measurement nightmare that actually leads to different sound signatures for people.” An owner then confirmed it from the other direction, reporting that he heard his pair “much closer to the position 1 measurement.” So a reviewer whose pair seats one way gets balanced and accurate, and a rig that clamps it another way gets warm and boomy.

RTINGS measures Bass Amount “Very Emphasized (5 dB)” — a real consumer shelf, not a hint of warmth. The dissenters are specific about its shape: RecordingNOW, who owns the headphone, writes that “the Px8 is missing out on the sub-bass slam and treble detail, in favor of a somewhat unnaturally forward upper-bass and lower mid bump,” and Headphones.com hears the same thing as “this boomy kind of bass presence on the low end.” Tom's Guide, listening rather than measuring, reached the opposite conclusion from the identical observation — “Bass sounds natural and rich without feeling overly emphasized. At first the low frequencies sounded a little lean when compared to the Sennheiser Momentum Wireless 4.”

⚠ vs. listeners — A measured +5 dB shelf is hard to square with “a little lean,” which is exactly where the positional variance matters — the sources that heard restraint and the rigs that measured a shelf were not necessarily reading the same seating. There is a second variable specific to this model: several sources report the bass level changes with the noise-cancelling mode. PCMag found that “Activating noise cancellation or Pass Through mode, however, is the equivalent of toggling a bass boost button,” and an owner reported it “pretty much unanimous that everyone hears some bass boost with ANC on vs with it off” — while Headphones.com measured the two active modes as identical and located the difference elsewhere, in passive mode.

RTINGS reads Treble Amount “Slightly Underemphasized (-2 dB)” — below target on average, which is why one camp hears a relaxed top end. Owners running the headphone long-term describe the unevenness inside that band and even locate it: one reports “Px8 have some nasty tremple resonances” and, separately, that “There is big dip on 6kHz but for many people this is not bad thing. Anyway this is then really anti sibilant headphone.” The same owner's fix is telling about the enclosure rather than the driver — he damped the cups with foam from another headphone's pads because the “Px8 dont't have almoust none damping.”

⚠ vs. listeners — The two camps are reading different properties of one graph: average level is low, which reads as smooth and anti-sibilant, while the peaks inside it read as resonance and compression. And because the ear-gain region is precisely where cup position moves the response most, which of the two you get is partly a matter of how the headphone sat on the reviewer's head that day.

No rig scores timbre directly, but the region is exactly the one the positional variance moves, so it is unusually fit-dependent here. Headphones.com hears “a bit of shout in there to my ear” and separately found that passive mode “has the same bass level but stronger upper mids, so it tilts the relative balance away from the bass a bit” — a reminder that how you connect changes the mid balance. An owner on the same thread landed where the editorial camp did: “I also find the timbre of the mids to sound very life like, and the carbon drivers to be quite capable in regards to detail retrieval and dynamics…for a closed back Bluetooth headphone.”

SoundGuys measures roughly 83% average reduction in perceived loudness and scores ANC 8.4 while scoring raw Isolation/Attenuation 7.4. RTINGS lists “Good overall noise isolation performance.” as its lead pro but is blunt about the ranking in comparison, noting the Px8 “doesn't block out as much sound as more affordable (in comparison) options like the Bose QuietComfort 45/QC45 Wireless.” One structural advantage over rivals: because the cups rotate flat instead of folding, Trusted Reviews notes the simplified arm linkage “gives wind less chance to affect the noise-cancelling performance” — the opposite of the wind vulnerability the Px7 S3 is criticised for.

⚠ vs. listeners — Two labs disagree about which band gets through, and in opposite directions. SoundGuys reports that “noise under 90Hz like rumbles and thumps will still get through on occasion” while “high-pitched noise will get absolutely erased due to excellent isolation.” PCMag found the reverse: the Px8 “dialed back powerful low-frequency rumble like you hear on a train to a much lower level,” yet “some of the more complex highs made it through to our ears.” The likeliest explanation is the one SoundGuys states outright — “as it is with any personal audio product that requires a seal in or near your ears: fit is everything” — and RecordingNOW points at the specific culprit, arguing the rectangular-ish cups “create less of a complete seal towards the rear of the ears.”

320 g by B&W's own spec, independently confirmed by RecordingNOW weighing 320.1 g on its own scale — which places it ninth of the twelve headphones in its class table, heavier than the Bose QuietComfort Ultra (254.4 g) and the Sony WH-1000XM5 (245.9 g) but lighter than the Focal Bathys (350 g) and the AirPods Max (387.8 g). SoundGuys scores Comfort 8.8 and RTINGS lists “Comfortable and premium build.” among its pros, so the majority reading is well supported. The dissent is specific and worth weighing if you have a big head: Headphones.com reported “Strong clamp force - too strong for my head, making it somewhat uncomfortable,” and StereoNET describes the same physical fact approvingly — the frame “has a more satisfying clamp on my ears, squishing those luxurious pads firmer around my lobes, making for a better seal.”

SoundGuys scores Durability 6.9/10 — one of its lower marks — and notes there is no ingress protection rating at all. Even the measurement source least impressed by the sound had nothing bad to say here, reporting that “Industrial design and aesthetics is also outstanding, at least for what I like in the looks department.” The counterweight is the owner tier: Amazon's 2,363 ratings average 4.3 but carry a 12% one-and-two-star tail, and Amazon's own digest of them notes that while some find the noise cancelling amazing, “others report issues with static in the right ear cup.” On Head-Fi, owners raise dead units that will not charge and ask whether repeatedly extending the arms to fit the case eventually breaks the internal wiring.

No lab test isolates resolution, which is why the sceptical read survives, but the platform claim is measurable and holds: B&W specifies distortion below 0.1% at 1 kHz/10 mW from the 40 mm Carbon Cone, and SoundGuys' MDAQS panel scores Distortion 4.4 — its second-highest mark, against a Timbre score of 4.0. So the objective data supports “clean” more strongly than it supports “correct.” RecordingNOW, whose tonal verdict is the harshest in the set, separates the two the same way, placing the Px8's technical sound quality “in that upper tier belonging with the Bathys and H95” while blaming the tuning for holding it back.

SoundGuys' MDAQS run is the objective anchor and it is emphatic: Immersiveness scores 4.8 out of 5, the highest of its three sub-scores and well above the Timbre mark that drags the overall down. Trusted Reviews backs the width claim against the obvious internal comparison, finding “the Px8's soundstage is bigger, wider, and more expansive than the Px7 S2.” RecordingNOW, comparing outward instead, reaches the opposite verdict — the Bose QuietComfort Ultra “has a much bigger and open soundstage with much more airiness. It's a better choice for movies and gaming than the narrow soundstage of Px8.”

RTINGS runs a dedicated Stereo Mismatch test, and the Px8 comes out ahead in both directions of its own family: better stereo matching than the Px7 S3, and — comparing against the model that replaced it — “the older Px8 Wireless last longer on a charge and had better stereo matching on our unit.” B&W attributes this to geometry rather than tuning, stating that “Precisely angled Carbon Cone drivers enhance stereo imaging,” and Tom's Guide describes the same design intent: the drive units are “carefully angled inside each earcup to ensure a consistent distance relative to the listener’s ear from every point across the surface of the driver.”

There is no bench test for this, but the disagreement is unusually concrete. What Hi-Fi lists “Limp sound at lower volume levels” as a headline con and explains it: “Drop the volume level down and some of the music’s sparkle and energy fade. This kind of thing isn’t uncommon in products such as this, but the Px8 do seem to suffer more than most.” It also notes the trait runs in the family — “Interestingly, we’ve often noted a similar trait in the company’s speakers too.” StereoNET, testing independently, describes the same behaviour without framing it as a fault.

⚠ vs. listeners — PCMag tested the volume question directly and came to the opposite conclusion, crediting the onboard DSP with keeping the balance consistent as level changes. Since PCMag was listening with noise cancelling off and What Hi-Fi's complaint is about perceived sparkle rather than measured balance, the two may be describing different things: the DSP can hold the response flat while the ear still loses the top and bottom at low level, and a warm-tilted headphone starts closer to that edge than a bright one does.

It launched at $699 / £599 / €699 / AU$1,150, and B&W's own US store now lists $749, In Stock — with World Wide Stereo's listing agreeing at $749 — so the US price rose rather than fell. Amazon US currently shows no featured offer at all, the Px8 S2 having taken its place in the channel. Street has run much lower where stock exists: What Hi-Fi's 2025 update reports “The Px8 has also come down in price and you can pick up a pair for around £499 / $559 these days,” and RecordingNOW puts it “closer to $500 to $550 brand new.” SoundGuys scores Value 5.5/10, its lowest sub-score of ten, and closes with the practical advice: “Definitely look for these cans on sale.”