Overall review summary
Expert Rating: 9.6/10
Sony LinkBuds S WF-LS900N Bluetooth Earbuds
Pros
- World’s smallest and lightest ANC earbuds
- Adaptive Sound Control and Speak-to-Chat
Comfortable, ergonomic fit
App-based customization and 360 Reality Audio
IPX4 splash resistance
Wireless charging support
Dual-device connectivity
Cons
- Slightly expensive for casual users
- Not ideal for high-end gaming
- Case could have had a stronger magnet
Sony LinkBuds S WF-LS900N Bluetooth Earbuds - Complete Review
Introduction
Sony is a brand synonymous with audio excellence - and the Sony LinkBuds S WF-LS900N live up to that legacy beautifully. Positioned between Sony’s flagship WF-1000XM series and its budget earbuds, the LinkBuds S deliver premium sound, exceptional noise cancellation, and ultimate comfort in a compact design.
Launched as the world’s smallest and lightest noise-cancelling TWS earbuds, the LinkBuds S are designed for users who want a balance between everyday comfort, smart features, and superior sound quality. Let’s dive into a complete breakdown of what makes these earbuds a favorite among audiophiles and professionals alike.
Unboxing Experience
Sony always ensures a premium unboxing feel, and the LinkBuds S are no exception.
Inside the box, you get:
-
LinkBuds S earbuds (left and right)
- Charging case
- USB Type-C charging cable
- 3 pairs of silicone ear tips (S, M, L)
- User manual and warranty information
Verdict: Minimalist, eco-friendly, and elegant - every element screams premium quality.
Design & Build Quality
- The Sony LinkBuds S are crafted with a sleek, matte finish that feels premium yet subtle.
- They weigh only 4.8 grams per earbud, making them among the lightest noise-cancelling earbuds globally.
- The charging case is compact and pocket-friendly, with a satisfying magnetic lid and LED indicator.
- Built with recycled plastic materials, Sony has prioritized sustainability in design.
- Available in White, Black, Beige, and Earth Blue color options.
Verdict: Lightweight, classy, and comfortable - perfect for all-day wear.
Comfort & Fit
- Ergonomically designed to sit securely in your ears without causing fatigue.
- The silicone ear tips provide a snug fit that enhances passive noise isolation.
- Ideal for long commutes, office work, or even workouts.
- Users can wear them for hours without discomfort.
Verdict: Excellent fit with superior comfort and stability.
Audio Quality
- Equipped with 5mm dynamic drivers tuned by Sony’s audio engineers for precise and balanced sound.
- Delivers deep bass, clear vocals, and detailed highs, making it perfect for every genre of music.
- Supports Hi-Res Audio Wireless through LDAC codec, offering near-lossless sound quality.
- Features DSEE Extreme™ (Digital Sound Enhancement Engine) which upscales compressed audio in real time.
- Works flawlessly across platforms - Spotify, YouTube Music, and more.
- Balanced tuning ensures music sounds natural and engaging.
Verdict: Studio-grade sound in a compact form factor.
Active Noise Cancellation (ANC)
- Sony’s Integrated Processor V1 delivers world-class Active Noise Cancellation.
- Effectively cancels out low-frequency sounds like engine noise and high-frequency chatter.
- Perfect for flights, public transport, and office environments.
- Features Adaptive Sound Control, which adjusts ANC levels based on your surroundings.
- The Transparency Mode automatically activates when you start talking, thanks to Speak-to-Chat technology.
Verdict: One of the most effective ANC systems in its category.
Microphone & Call Quality
- Dual beamforming microphones and a bone-conduction sensor ensure excellent voice clarity.
- AI-based noise reduction isolates your voice in noisy environments.
- The recipient hears clear, natural-sounding audio without distortion.
- Great for online meetings and phone calls, even in windy conditions.
Verdict: Crystal-clear calls with intelligent noise suppression.
Bluetooth & Connectivity
- Uses Bluetooth 5.2 for fast, stable connections with minimal dropouts.
- Supports Multipoint Connectivity - connect two devices simultaneously (e.g., laptop + phone).
- Works seamlessly with both Android and iOS devices.
- Fast Pair (Google) and Swift Pair (Windows) make initial setup effortless.
- Range up to 10 meters with zero latency issues.
Verdict: Flawless connectivity with smart pairing and switching.
Battery Life & Charging
- Up to 6 hours of playback with ANC ON; extends to 20 hours with the case.
- With ANC OFF, battery lasts up to 9 hours per charge.
- Quick charging: 5 minutes gives 1 hour of playback.
- Type-C charging ensures fast power-ups.
- Qi wireless charging supported for added convenience.
Verdict: Reliable battery with both wired and wireless fast charging options.
Smart Features
- Speak-to-Chat: Automatically pauses music when you start talking.
- Adaptive Sound Control: Learns your habits and adjusts ANC or ambient sound automatically.
- Google Assistant & Alexa integration for hands-free commands.
- Headphones Connect App allows you to customize EQ, touch controls, and ANC modes.
- 360 Reality Audio for immersive, spatial listening experiences.
- Proximity Sensor: Automatically pauses music when earbuds are removed.
Verdict: Packed with AI-driven and user-friendly smart features.
Touch Controls
Intuitive and customizable touch controls:
- Play/Pause: Single tap
- Skip Track: Double tap
- ANC/Transparency Switch: Long press
- Volume Control: Customizable via app
- Voice Assistant Activation: Triple tap
Controls are smooth, responsive, and easily customizable using the Sony Headphones Connect app.
Verdict: Responsive controls enhance the user experience greatly.
Gaming & Latency
- Offers low-latency audio ideal for casual gaming and video watching.
- Synchronizes perfectly with visuals for a lag-free experience.
- However, for competitive gaming, minor latency can occur.
Verdict: Suitable for entertainment and light gaming, not pro-level.
Durability & Water Resistance
- IPX4-rated for sweat and splash resistance.
- Suitable for light workouts or outdoor use but not swimming.
- Build feels sturdy despite its lightweight construction.
Verdict: Durable and reliable for everyday use.
App Integration & Customization
The Sony Headphones Connect App is one of the best companion apps available.
Lets you:
- Adjust EQ settings and sound profiles
- Manage noise cancellation and transparency modes
- Configure touch gestures
- Enable adaptive sound and 360 Reality Audio
- Update firmware
Verdict: Full customization and control at your fingertips.
Battery & Power Management
- Intelligent power-saving feature switches to low-power mode when idle.
- Case battery indicator shows charge level precisely.
- Auto power-off after inactivity extends battery life.
Verdict: Smart energy management that maximizes usability.
Price & Availability
- The Sony LinkBuds S WF-LS900N are priced around ₹14,990 in India (depending on offers).
- Available on Sony India, Amazon, Flipkart, and authorized retailers.
Verdict: Priced competitively for its features - ideal for professionals and music enthusiasts.
Final Verdict
The Sony LinkBuds S WF-LS900N are a near-perfect combination of comfort, smart features, and acoustic brilliance. Whether you’re a professional who needs distraction-free focus, a traveler seeking peace, or a music enthusiast craving clarity - these earbuds deliver it all.
Their compact design, powerful ANC, and rich sound make them one of the best TWS earbuds you can buy under ₹15,000.
Best For:
🎵 Audiophiles
👔 Professionals & Remote Workers
✈️ Frequent Travelers
🎧 Music Enthusiasts
Conclusion
The Sony LinkBuds S WF-LS900N redefine what compact true wireless earbuds can achieve. They offer premium sound, top-tier ANC, and AI-powered smart features in a size that’s barely noticeable.
If you’re looking for flagship-grade audio in a featherlight, eco-friendly design, the LinkBuds S are absolutely worth every rupee.
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