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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-01 · 6 min read · Independent comparison
• Bowers & Wilkins PX biggest strength: full-size over-ear design with 40mm drivers borrowed from the P9 Signature line, adaptive noise cancelling and up to 22 hours of playback.
• Bowers & Wilkins PX biggest trade-off: older Bluetooth 4.1 with aptX-HD rather than aptX Adaptive, a heavier on-ear fit, and a form factor that is not built for sweaty workouts.
• Yamaha TW-E7B biggest strength: modern Bluetooth 5.2 with Qualcomm aptX Adaptive, active noise cancelling and an IPX5 water-resistant rating in a tiny in-ear package.
• Yamaha TW-E7B biggest trade-off: just 6 hours of battery per charge and a true wireless design that is easier to lose and needs the case to top up.
• Who each pick is for: the PX suits long, stationary listening sessions at a desk or on a flight; the TW-E7B suits commuters, gym-goers and anyone who wants the newer codec in their ears.
The PX is the old-school, over-ear answer to noise cancelling. Bowers & Wilkins built it around 40mm full-range dynamic drivers and, notably, says the drive units come straight from the P9 Signature headphones. The drivers are subtly angled inside the cups to give a more natural stereo image, which is the kind of detail that matters when you are sitting still and actually listening rather than half-paying attention on a treadmill. Frequency range runs 10Hz to 20kHz and impedance is 22 ohm, so it is easy enough to drive from a phone over Bluetooth.
What really sets the PX apart is how it behaves around you. Built-in sensors pause playback when you lift an ear cup, put the headphones into a power-saving sleep mode when you set them down, and resume when you pick them up again. Paired with touch-based noise control and adaptive noise cancelling that you can tune to your preference, the whole experience is designed to disappear. The 22-hour battery life backs that up — that is an enormous amount of listening time compared with most true wireless earbuds, and it means you can leave the charger at home for a multi-day trip.
Yamaha TW-E7B: Who It's For
The TW-E7B is the opposite philosophy: everything squeezed into two tiny in-ear buds. Yamaha's pitch is "Yamaha True Sound" — realism, detail and clarity — paired with the company's own Advanced ANC, which it describes as leaving your music pure and untouched. The dynamic drivers cover 20Hz to 20,000Hz, and the housing mixes aluminium and plastic, which keeps the weight down to roughly 7 grams per bud. It comes with five sets of eartips (XS through XL), so getting a proper seal is realistic for most ears.
Where the TW-E7B pulls ahead technically is connectivity. It runs Bluetooth 5.2 with Qualcomm aptX Adaptive and TrueWireless Mirroring, which is the newer, more flexible approach to wireless audio than the PX's Bluetooth 4.1. That is the core of the aptx adaptive headphones comparison: aptX Adaptive is designed to adapt to signal conditions and content, while the PX relies on aptX-HD. Add in Qualcomm cVc Clear Voice Capture for calls, Advanced Listening Care for full-range sound at lower volumes, and an IPX5 water-resistance rating, and you have a bud that is clearly aimed at movement and weather rather than a listening chair.
Buy the TW-E7B if you commute, train, run, or take calls on the move and want active noise cancelling without a headband. The IPX5 rating makes it the obvious pick for sport and sweat, and the mic array plus cVc is a real advantage for voice calls. Skip it if battery life is your priority — 6 hours per charge is the trade-off for that tiny, sporty shell — or if you want the sense of occasion that a full-size over-ear cup gives you. It is also in-ear only, with no wired fallback, so there is no 3.5mm option here.
Side-by-Side: Which Should You Choose?
• Best for battery life → Bowers & Wilkins PX. Up to 22 hours versus 6 hours on the Yamaha.
• Best for the newest codec → Yamaha TW-E7B. Bluetooth 5.2 with Qualcomm aptX Adaptive beats Bluetooth 4.1 with aptX-HD on paper.
• Best for sport and sweat → Yamaha TW-E7B. IPX5 water resistance is the deciding spec here.
• Best for calls on the move → Yamaha TW-E7B. Qualcomm cVc Clear Voice Capture and a dedicated mic design.
• Best for a wired fallback → Bowers & Wilkins PX. It has a 3.5mm jack; the Yamaha has none.
• Best for travel and commuting bulk → Yamaha TW-E7B. A charging case that slips into a pocket beats a headband every time.
• Best for fuss-free controls → Bowers & Wilkins PX. Lift a cup to pause, set it down to sleep, pick it up to resume.
In my opinion, the right answer depends entirely on where you listen. If you want one pair for the desk, the plane and the sofa, I would buy the Bowers & Wilkins PX — the 22-hour battery, the over-ear acoustics and the sensor-driven controls are built for exactly that. If you want earbuds for the gym, the street and phone calls, I would buy the Yamaha TW-E7B and accept the 6-hour battery as the cost of the format. Neither is a compromise on sound philosophy; they are simply two different tools.
aptX Adaptive is a Qualcomm Bluetooth audio codec that adjusts its bitrate and latency based on what you are listening to and how strong the wireless signal is. Among these two, only the Yamaha TW-E7B supports it, via Bluetooth 5.2. The Bowers & Wilkins PX uses the older aptX-HD over Bluetooth 4.1 instead.
The Bowers & Wilkins PX is rated at up to 22 hours of battery life, while the Yamaha TW-E7B is rated at 6 hours per charge. That is a huge gap, and it comes down to form factor: a full-size over-ear headphone simply has room for a much bigger battery than two tiny earbuds.
The Yamaha TW-E7B, without question. It carries an IPX5 water-resistance rating, which is specifically aimed at sweat and weather, and its in-ear fit stays put during movement. The Bowers & Wilkins PX is an over-ear headphone with no water-resistance rating, so it is not the one to take into a workout.
No. The Bowers & Wilkins PX includes a 3.5mm headphone jack alongside its Bluetooth connection, so you can listen wired when you want to. The Yamaha TW-E7B is true wireless only, with no headphone jack, so it relies entirely on its Bluetooth 5.2 connection and charging case.
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