Wf 1000Xm4 Truly Wireless Honest Review — Is the Hype Justified?

I've been using the Wf 1000Xm4 Truly Wireless earbuds as my daily drivers for several months now, and after commuting, working from cafés, taking long flights, and doing a fair amount of calls, I wanted to share an honest, hands-on account of what these earbuds are actually like to live with. I bought them myself, I updated firmware as Sony pushed it out, and I've compared them side-by-side with other earbuds I own. What follows is a practical breakdown of what I appreciated, what frustrated me, and who I think should consider buying them.

Introduction — why I bought them and what I hoped for

I bought the Wf 1000Xm4 because the hype promised top-tier active noise cancellation (ANC) in a small, truly wireless package, plus better sound than the previous generation. In my experience, the jump from the XM3 to the XM4 promised better microphones, a smaller case, and codecs like LDAC for higher-resolution audio on Android. My primary use cases were commuting, focus work, and self-hosted calls; I also wanted something that could last through a long workday and be comfortable for marathon listening sessions.

First impressions and setup

Out of the box I noticed a couple of practical things: the case is noticeably smaller than the previous Sony true wireless case I used, the earbuds feel more sculpted and dense, and Sony included their new foam-ish ear tips in multiple sizes. Pairing with my Android phone was seamless — the Headphones Connect app detected them quickly and offered the standard setup steps: tip fit test, firmware update, and a prompt to enable features like Adaptive Sound and DSEE Extreme. In my experience the app is one of the better companions in terms of features, but it can feel cluttered if you only want simple EQ changes.

Sound quality — what I actually heard

What I found was that the Wf 1000Xm4 are one of the best-sounding true wireless earbuds I've used at this price range. On streaming services and high-bitrate local files, the bass has good weight without bleeding into mids, the midrange is clear and forward enough for vocals, and highs are extended without sounding brittle. The new driver and Sony's processing made a noticeable difference compared to my older TWS pairs.

When I used LDAC on an Android phone, I noticed extra texture and air in acoustic tracks — subtle details on cymbals and room ambience that AAC on an iPhone didn't reproduce as vividly. In my experience, that codec advantage is real if you care about high-resolution streaming and are on Android, but it's not a requirement to enjoy the earbuds. With AAC and SBC they still sound excellent for everyday use.

Active Noise Cancellation and ambient modes

ANC is a headline feature, and in my testing it performed extremely well for true wireless earbuds. On trains and airplanes the Wf 1000Xm4 reduced engine rumble and mid-frequency cabin noise enough that I could listen at much lower volumes and still retain detail. I did notice that ANC is slightly less authoritative on very low, deep rumble compared to full-size over-ear headphones (which is expected), but it's among the best I've seen in in-ear designs.

Ambient sound modes and the adaptive features in the app are useful. The “Speak-to-Chat” and quick ambient mode allow brief conversations without removing an earbud, and the adaptive sound control did a reasonable job switching profiles between walking and sitting. One thing that bothered me: the ambient/transparency mode occasionally sounded a touch processed — voices came through a little EQed and slightly metallic at times, which made short conversations feel a bit unnatural compared with simply pulling an earbud out.

Comfort, fit, and real-world wear

Fit is personal, but in my experience the foam-like tips Sony provides gave me a secure seal and better passive isolation than silicone tips did on my older pairs. I could wear them for several hours of focused work without needing to reposition them. That said, after very long listening sessions (4+ hours without breaks) I sometimes felt a small pressure in my outer ear — not pain, but a reminder to take short breaks. Fit also affects ANC performance; when the seal is right, ANC shines. When it isn't, the bass and noise cancelling both suffer.

Battery life & charging behavior

Over the months I tested average daily battery life under mixed use (calls, music, ANC on most of the day). My experience: a full charge in the earbuds usually lasted me through a long workday with some margin left — I'd commonly get somewhere around 5–7 hours with ANC on depending on volume and codec. The case provides multiple recharges and supports wireless charging — handy for topping up on my desk charger.

Fast-charge behavior is useful: a short 10–15 minute boost gave me enough juice to make it through a meeting or commute. Real-world battery varied based on ANC, volume, and whether I enabled LDAC. If you plan to use them for extended long-haul flights with ANC on NON-stop, you'll want to make sure the case is fully charged before you travel.

Microphones and call quality

Call quality is often where earbuds fall short. In my calls I found the Wf 1000Xm4 to be competent: voices sounded clear on the other end more often than not. Sony's beamforming mics and the bone-conduction sensor (which helps detect voice vibrations) made spoken words come through with good intelligibility in quiet and moderately noisy settings. What I noticed was that in very windy outdoor environments the mics still struggled — wind noise could muddy my voice and required me to cup my hand or briefly shield the mic to be heard clearly. For daily remote meetings and phone calls in cafes and indoors, they worked well; for walking-journalist phone calls in gusty weather, they were less reliable.

Companion app and features

The Headphones Connect app is feature-rich. I've used EQ presets and a 5-band EQ, turned on DSEE Extreme for some lossy tracks, and enabled 360 Reality Audio for supported tracks — it can be fun if you like tinkering. Adaptive features (like auto-switching ambient profiles) mostly worked in my hands, though some toggles felt buried in menus. I appreciated the firmware updates Sony pushed over time, which improved some latency behaviors and added small reliability fixes. One practical annoyance: the app occasionally asks for permissions or next-step confirmations that interrupt setup flows, which I found mildly annoying the first few times.

Durability and water resistance

I've used these earbuds in light rain and during sweaty workouts. They've held up fine, with no degradation in sound or connectivity. I wouldn't submerge them, and I treat them more as splash-resistant than as sports-specific earbuds. After months of wear they still look and sound as they did on day one, which says something about fit and finish.

Pros & Cons

• Pros:
  • Excellent ANC for a truly wireless earbud — noticeably reduces commuting and cabin noise in my experience
  • Strong, detailed sound signature with good bass control and clarity
  • LDAC support gives extra resolution on Android devices
  • Comfortable fit and good passive isolation with Sony's supplied tips
  • Feature-rich app (EQ, DSEE Extreme, adaptive sound, 360 audio)
  • Compact case with wireless charging and sensible fast-charge behavior
  • Good call quality in indoor and moderate-noise environments
• Cons:
  • Ambient/transparency mode can sound processed and slightly metallic at times
  • Wind still affects call clarity outdoors — not a perfect solution for windy environments
  • Case is smaller than previous Sony case but still larger than some competitors
  • Battery life is good but not class-leading; long non-stop flights may require careful planning
  • App can be cluttered and some settings are not discoverable without digging
  • Firmware and feature differences across platforms (Android vs iOS) mean the experience isn't identical for everyone

Quick comparison — WF-1000XM4 vs older Sony and a common competitor

Who should buy the Wf 1000Xm4?

In my experience, these earbuds are a great fit if you:

• Want the best noise cancelling you can get in a truly wireless earbud without moving to bulky over-ear headphones.
• Listen to a lot of music on Android and can take advantage of LDAC.
• Value sound quality and long-term comfort for focused work and travel.
• Use voice calls mainly in indoor or moderate-noise environments and want reliable call clarity in those scenarios.

They might not be the right choice if you:

• Spend lots of time taking calls on the move in windy outdoor environments.
• Prefer the absolute smallest pocketable case (some competitors are smaller).
• Want maximum battery life without caring for ANC or advanced features.

Buying guide — what to check before you buy

From months of using them, here are practical tips I relied on when deciding and that I recommend you check before purchasing:

• Try the fit first if possible: Passive seal matters for both sound and ANC. If you can test tips or try them in-store, do it. The included foam-like tips are helpful, but everyone's ears are different.
• Consider your phone ecosystem: If you're primarily on Android, you'll get the codec and feature advantages (LDAC, certain app integrations). If you're on iOS, they still work great, but you won't get LDAC's higher resolution.
• Test call quality in your environment: If most of your calls are outdoors, try a quick call test or read recent user reports about wind performance — it's a known weak point for many earbuds.
• Battery expectations: Plan for daily charging unless you want to stress the case for multi-day travel. Carry a USB-C cable or use wireless charging to top up the case during travel.
• Firmware and app readiness: Sony releases firmware updates that can improve latency and stability. After buying, install the app and check for updates — I found a few improvements came via firmware during my months of ownership.
• Alternatives to consider: If you want smaller cases or deeper ecosystem integration with Apple, compare with AirPods Pro. If you want absolute battery king, consider larger over-ear options.

Final thoughts — is the hype justified?

After several months of real-world use, I can say the hype around the Wf 1000Xm4 is largely justified. In daily life they delivered on the core promises: excellent ANC for a truly wireless design, sound that genuinely felt upgraded over the previous generation, and a compact case with convenient charging options. I appreciated the small practical details — the improved tips, thoughtful app features, and consistent firmware support.

That said, they're not flawless. Ambient mode can sometimes feel processed, wind is still an enemy for outdoor calls, and the case, while smaller than Sony's previous model, isn't the tiniest. Battery life is good but not miraculous. Those trade-offs matter depending on your priorities.

In my experience, if you want top-tier ANC and sound in a truly wireless package and are willing to accept the small annoyances I outlined, the Wf 1000Xm4 is a strong, defendable purchase. For me, they replaced several other pairs in rotation because they covered most daily bases so well. I'm still realistic about their limits, and I often reach for them when I want quiet, focused listening or a clear music-first experience while traveling.

Conclusion

I've used these earbuds across commutes, flights, and long work sessions, and what I found was a product that mostly lives up to the hype: excellent noise cancelling for a truly wireless design, thoughtful sound tuning, and useful features delivered through a capable app. If those are priorities for you — especially if you listen on Android and value LDAC — the Wf 1000Xm4 deserves serious consideration. If you need perfect outdoor call clarity in wind or the smallest possible case, you may want to weigh alternatives. Overall, in my experience they are among the best true wireless earbuds I've owned and remain my go-to when I want immersive, portable listening.