This is the English edition of a review from my Japanese YouTube channel, iestaLife. I review gadgets from my home studio in Japan, so product links go to Amazon Japan.
Quick take
After three months with the Sennheiser Momentum True Wireless 4, I’m very happy with them. Early on, noise cancelling seemed to add an unnatural noise, but an update about a month in fixed it. Sound is top-tier for true wireless: balanced, natural and fun to listen to. The one catch is the charging case, which won’t charge the earbuds if you fit taller third-party ear tips.
| Spec | Momentum True Wireless 4 |
|---|---|
| Driver | New 7 mm dynamic driver |
| Bluetooth | 5.4 |
| Codecs | SBC, AAC, aptX, aptX Adaptive / Lossless, LC3 |
| Battery (earbuds) | Up to 7.5 hours |
| Other | Adaptive ANC, wireless charging, multipoint |
| Price in Japan (official store, at the time of recording) | ¥49,940 |
What I tested
- Three months of daily listening, including an hour of running
- Music and train-noise comparisons against the Sony WF-1000XM5
- Third-party ear tips (COREIR Brass and low-profile foam tips)
What I found
- Sound: highs, mids and lows are well balanced and blend naturally. I’d give it 9 to 9.5 out of 10. The stage feels real rather than artificially wide, and detail serves the music rather than showing off. Great for acoustic and live-sounding recordings.
- Vs WF-1000XM5: for sound alone, I preferred the Sennheiser, though the price gap makes that a slightly unfair fight. Sony has fuller, punchier bass (helped by its foam tips); Sennheiser’s bass is tighter and the presentation cleaner.
- ANC: both are excellent. After the update, the Sennheiser holds its own against Sony.
- Fit: not tiny, but it sits securely. An hour of running and it never slipped.
- Case limitation: the ear-tip wells are shallow, so taller tips like COREIR Brass make the earbuds sit too high to charge. Low-profile tips work fine.
Who it’s for
- Listeners who don’t want to compromise on sound with true wireless
- People who listen to acoustic or live recordings
- Anyone wanting earbuds that stay put during exercise
If you want heavy bass and pressure, or you rely on tall aftermarket tips, the Sony may suit you better.
Watch the video
The video is in Japanese. Recorded sound comparisons with the Sony (a recording, so not identical to hearing them in person) start around 05:10, the ANC test around 07:20 and the ear-tip issue around 09:10.
Limitations
Sound impressions are my own taste. The firmware may have changed since recording. The cheap foam tips I mention are sold at Daiso in Japan, so they may be hard to find elsewhere. Prices are in yen at the time of recording.
Products
Sennheiser Momentum True Wireless 4: on Amazon Japan
Sony WF-1000XM5: on Amazon Japan
COREIR Brass ear tips: on Amazon Japan
The Amazon Japan links above are affiliate links. As an Amazon Associate, I earn from qualifying purchases. Check the listing for the exact model, current price and shipping availability in your region.
More reviews in English
All Earbuds, Speakers & Audio (35) →Browse all English reviews →
This review is also available in Japanese.