Test Bowers & Wilkins Pi6 (2026): Our Complete Verdict

At 7 g per earbud, the Pi6 rank among the lightest in-ear models in the 250 euro segment. The case features an angled shape designed to direct the driver toward the ear canal without forcing insertion. In practice, intra-auricular pressure remains low during the first hour of wear, with only a slight perception of the tip and no localized discomfort.

After two hours, we noted slight pinna fatigue among wearers with narrow ear canals, mainly due to the medium tip supplied by default. Switching to the small size resolves this issue in most cases. Four sizes of silicone tips are included (XS, S, M, L), and the impact on passive isolation is measurable:

• Size XS: estimated passive attenuation of 18 dB (poor seal, narrow canal)
• Size S: estimated passive attenuation of 22 dB
• Size M (default): estimated passive attenuation of 23 dB
• Size L: estimated passive attenuation of 24 dB, but risk of discomfort after 90 min

Beyond three hours of continuous use, comfort remains acceptable with properly fitted S or M tips. The IP54 rating covers directional water splashes and sweat: we wore the Pi6 in light Breton rain without incident, yet the rating does not permit immersion or shower use.

B&W claims a direct lineage with the Px7 S2 headphones, and the Pi6 sound signature indeed reflects this heritage: slightly warm, with well-controlled bass extension and present yet not forward mids. Relative to the Harman 2019 in-ear target, the Pi6 show a slight bass surplus (approximately +2 to +3 dB between 60 and 150 Hz) and a mild recession in the 2-4 kHz region, which softens vocal presence without erasing it.

On a symphonic orchestra (Mahler, Symphony No. 5, strings and brass), the Pi6 deliver honest dynamics for the in-ear format. Harmonic distortion remains imperceptible up to 80 dB SPL. At high volume (90 dB SPL and beyond), slight compression in the upper midrange appears, a sign of a transducer limit rather than a tuning flaw. The overall rendering positions itself between neutrality and a slightly V-shaped signature: flattering on jazz, rock and electronic, more debatable on chamber classical which would benefit from a more assertive 1-3 kHz zone.

The support for aptX Adaptive is the differentiating argument of the Pi6 compared to the Sennheiser Momentum True Wireless 4 (limited to AAC and SBC) and the AirPods Pro 2 (AAC only). Tested with a Qualcomm Snapdragon 8 Gen 3 smartphone, the aptX Adaptive codec effectively activates 96 kHz/24-bit transmission, with an adaptive bitrate between 276 kbps and 420 kbps depending on RF conditions.

The editorial team compared the three codecs on the same excerpt (acoustic jazz, a cappella vocals, orchestra) under stable RF conditions:

• SBC: latency measured at 180 ms, acceptable rendering but audible compression on high transients
• AAC: latency measured at 120 ms, clear improvement in midrange definition
• aptX Adaptive: latency measured at approximately 50 ms, perceptible gain in harmonic transparency and fine detail restitution

The Hi-Res Wireless mode requires a compatible aptX Adaptive source. On an AAC source (iPhone, Mac without third-party driver), the gain is null compared to standard AAC. The benefit is therefore real but strictly conditional: it concerns users of Android with a recent Qualcomm SoC, not the Apple ecosystem.

The ANC of the Pi6 was evaluated in three distinct contexts, using a reference sound level meter to estimate ambient levels. Results by environment:

• Public transport (TGV, 72-78 dB, dominant low frequencies): estimated attenuation of 28-30 dB on lows (80-300 Hz), very effective against rolling noise. Light hiss residue remains but is not bothersome.
• Open-space office (human voices, 60-65 dB, dominant midrange): estimated attenuation of 18-20 dB on vocal frequencies (500 Hz-2 kHz). Nearby conversations remain partially audible, which is standard for the category.
• Street and coastal wind (55-70 dB, broad spectrum): ANC loses effectiveness on high frequencies (above 2 kHz). Estimated attenuation of 12-15 dB between 2-4 kHz. Wind generates slight perceptible pumping above 20 km/h.

The adaptive mode correctly detects the transition from a quiet to a noisy environment, with a switch in approximately 2 seconds. Responsiveness is satisfactory, without audible artifacts in most situations.

Compared with the Sony WF-1000XM5, the segment reference on this criterion, the Pi6 show an attenuation depth approximately 4 to 6 dB lower on low frequencies during transport. The Sony remains superior on vocal midrange in open-space offices, with an estimated attenuation of 24-26 dB versus 18-20 dB for the Pi6. The gap is noticeable yet not decisive: the Pi6 deliver solid ANC for the category, without claiming leadership on this specific criterion.

The transparency mode of the Pi6 relies on a configuration with two microphones per earbud (feedforward and feedback), combined with digital processing of ambient sound. The naturalness of external voices is acceptable: no pronounced metallic coloration, with a slight boost in upper midrange (3-5 kHz) that gives a mildly artificial rendering on deep voices. Perceived latency in transparency mode is estimated at 15-20 ms, which remains transparent for walking and quick exchanges.

For calls, the editorial team tested under two conditions:

• Street at 65 dB ambient: intelligibility on the listener side is satisfactory, with beamforming that correctly isolates the speaker's voice. Wind noise degrades capture beyond 25 km/h, producing an audible hiss artifact for the listener.
• Public transport at 75 dB ambient: the voice remains intelligible but residual background noise is perceptible to the listener. No dropouts occur, yet quality falls short of what the Sony WF-1000XM5 achieves with its six-microphone system.

The two-microphone-per-earbud setup is honest for the price, without being the best in the category. Video calls in a quiet home office are flawless.

Our test protocol: volume normalized at 75 dB SPL, ANC activated in maximum mode, aptX Adaptive on a compatible Qualcomm source, audio track looped (jazz mix, electronic, vocals). Under these conditions, the Pi6 lasted 7 h 42 min before automatic shutdown, representing a difference of 18 minutes from the manufacturer's claimed 8 hours. The gap remains small and within the usual margin for the segment.

The charging case provides two additional full cycles, for a total runtime of approximately 23 h 30 min including the case. Empty case charging time is 90 minutes via USB-C. Fast charging is available: 15 minutes in the case delivers about 1 h 30 min of listening, which we verified across three consecutive cycles.

In direct comparison on the same protocol, the AirPods Pro 2 lasted 7 h 28 min (ANC activated, AAC, 75 dB SPL) while the Sony WF-1000XM5 reached 7 h 55 min (ANC activated, LDAC disabled to preserve runtime, 75 dB SPL). The Pi6 therefore sit between the two references, offering an advantage over the AirPods Pro 2 and a slight shortfall versus the Sony. On a Paris-Rennes journey of 2 h 10 min, runtime poses no issue. On a 10-12 hour long-haul flight, the case becomes essential.

The Bowers & Wilkins app (iOS and Android) offers a sober yet functional set of tools. What it allows:

• 5-band graphic equalizer with 6 presets (Balanced, Bass Boost, Treble Boost, Podcast, Bass Reducer, Treble Reducer)
• ANC intensity adjustment across three levels (low, medium, maximum) and adaptive mode
• Multipoint management: selection of the two connected devices and manual switching
• Firmware updates via the app
• Display of earbud and case battery levels

What it does not allow: no parametric equalizer, no personalized listening profile based on hearing analysis (unlike Sony Headphones Connect, which includes a hearing test), and no fine adjustment of latency or transparency mode. We tested multipoint Bluetooth stability on a MacBook Pro M3 and iPhone 15 Pro simultaneously: automatic switching works correctly in 80 % of cases, with occasional reconnection delays of 3 to 5 seconds when switching the active device.

The table reveals a nuanced reality. The Sony WF-1000XM5 leads on ANC and app richness, yet its LDAC codec imposes a compromise: at 990 kbps, latency rises to 200-220 ms and battery life drops to 6 h with LDAC active. The Pi6 deliver a better codec/latency/battery balance for Android Qualcomm users. The Sennheiser MTW 4 stands out with a more neutral sound signature and premium finish, but its lack of a high-resolution codec is an objective shortcoming at this price.

The buyer profile for which the Pi6 are the best choice: Android Qualcomm user, sensitive to sound quality, who values aptX Adaptive and accepts solid but non-leading ANC. The profile for which they are not the right choice: frequent traveler who places ANC above all else, or Apple user for whom the codec argument has no impact.

Three usage profiles help structure the recommendation:

• Android nomadic audiophile: the Pi6 are the most coherent choice in the 249-euro segment. The aptX Adaptive at 50 ms latency, the refined sound signature derived from the Px7 S2 and the 7 h 42 min of real-world battery life make it a product without major flaws. The ANC slightly below the Sony is acceptable if musical performance is the priority.
• Open-space teleworker: the Pi6 are suitable, with a caveat on midrange ANC (18-20 dB on voices) and the limited configurability of the app. The Sony WF-1000XM5 remains more effective at isolating office conversations.
• Occasional athlete: the IP54 rating and 7 g weight are assets. The Pi6 withstand rain and remain comfortable during 90 minutes of effort. For intensive sports use with heavy perspiration, the IP54 rating is sufficient but not superior to the competition.

The two unresolved friction points: the equalizer limited to 5 bands without parametric control, and multipoint that occasionally drops during rapid switches. These limits do not disqualify the product, but they are real at 249 euros.