Bowers & Wilkins Pi5 S2 vs Sony WH-ULT900N – Which One Should You Buy? (2026)

Fast charging support. Waterproof IP54 earbuds only. Wireless Charging Support Yes. Advanced hybrid noise-cancellation TWS technology for true audio performance. In-ear noise cancelling true wireless earbuds. Two microphones per earbud for calls and noise cancellation. Immersive audio with aptX for high-quality wireless transmission. A stable and reliable connection between earbuds means high-performance sound. Charge Support means just 15 minutes of charging is good for two hours of listening and communication time.

Battery Life 30 Hrs NC ON, 50 Hrs NC OFF. Discover ULT WEAR Noise-Cancelling Headphones. 110 dB/mW when connecting via the headphone cable with the unit turned On. 100 dB/mW when connecting via the headphone cable with the unit turned off 32 ohms 1kHz when connecting via the headphone cable with the unit turned off. 314 ohms 1 kHz when connecting via the headphone cable with the unit turned On. Massive Bass : Press the ULT button to boost your bass & feel the incredible power of sound. The ULT WEAR is designed to fit your style. Cool, comfortable, and built for powerful, high-quality sound. With exceptional bass and improved noise cancelling, our new ULT WEAR headphones let you bring your favourite festival or club feel with you, everywhere you go. With dual noise sensor technology and the Integrated Processor V1, ULT WEAR takes digital noise cancelling to the next level. Now you can truly shut out the world and enjoy a party for oneâ€”just you and your music. The ULT WEAR exudes function, form and features. A sensor pauses your music when you take them off and starts again when you put them on, and BluetoothÂ® pairs with two devices at the same time. Ideal for everyday use. Press the ULT button for powerful sound, thanks to the specially designed 40-mm driver unit and Integrated Processor V1. Enjoy precise, punchy, high-quality sound that gets you as close to the original recording as possible.

Key Differences

There is a noticeable difference in weight (47 Gm vs 255 GM), which may affect comfort during extended use. Bowers & Wilkins Pi5 S2 and Sony WH-ULT900N offer different noise cancellation capabilities (HNC / ANC vs Active Noise Cancelling), which can impact how effectively they block external noise. Bowers & Wilkins Pi5 S2 and Sony WH-ULT900N are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. The frequency response differs (2402 MHz To 2480 MHz vs 5Hz - 20KHz), which can influence how well the headphones reproduce lows, mids, and highs. Battery life varies between the two (19 Hours vs 30 Hours), which affects how long you can use them on a single charge. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Impedance levels vary (NA vs 32 / 314 Ohms), which can affect compatibility and audio output when used with different devices. Bowers & Wilkins Pi5 S2 uses Bluetooth 5.0 while Sony WH-ULT900N supports Bluetooth 5.2, which can impact connectivity stability and efficiency. The driver size differs between the two (9.2 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity.

Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.

Top Differences

Battery Life: 19 Hours vs 30 Hours
Noise Cancelling: HNC / ANC vs Active Noise Cancelling
Driver Size: 9.2 mm vs 40 mm
Bluetooth: 5.0 vs 5.2
Weight: 47 Gm vs 255 GM

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Key Differences

Top Differences