Sony LinkBuds S vs Sony WH-ULT900N – Full Comparison & Verdict (2026)

IPX4 splash and sweat-proof. Immersive music and clear calls. Ultra-small, lightweight and super fit. Always on for connecting your online and offline worlds. Automatically switches between optimised ambient sound and noise cancelling. 20 hours battery life with a 5-minute quick charge for up to 60 minutes of play 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

The driver size differs between the two (5 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. If you're comparing Sony LinkBuds S and Sony WH-ULT900N, both models offer a strong combination of sound performance, comfort, and modern wireless features. The frequency response differs (20 Hz - 20000 Hz vs 5Hz - 20KHz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (NA vs 32 / 314 Ohms), which can affect compatibility and audio output when used with different devices. Sony LinkBuds S and Sony WH-ULT900N offer different noise cancellation capabilities (Ambient vs Active Noise Cancelling), which can impact how effectively they block external noise. There is a noticeable difference in weight (35 Gm vs 255 GM), which may affect comfort during extended use. Battery life varies between the two (6 / 9 Hours vs 30 Hours), which affects how long you can use them on a single charge. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios.

Verdict: Choosing between Sony LinkBuds S and Sony WH-ULT900N depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Battery Life: 6 / 9 Hours vs 30 Hours
Noise Cancelling: Ambient vs Active Noise Cancelling
Driver Size: 5 mm vs 40 mm
Weight: 35 Gm vs 255 GM
Impedance: NA vs 32 / 314 Ohms

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Key Differences

Top Differences