While most flagship earbuds compete on who has the flashiest software trick or the most aggressive noise cancellation, Sennheiser has always kept its focus on one uncompromising goal: unadulterated, high-fidelity sound.
With the release of the Sennheiser Momentum True Wireless 4, the legendary audio brand aims to solidify its grip on the premium audio market. Built on their acclaimed 7mm TrueResponse transducer system, this fourth-generation flagship introduces future-proof connectivity like Bluetooth 5.4, LE Audio, Auracast, and Snapdragon Sound with aptX Lossless support for compatible Android devices.
In this in-depth Sennheiser Momentum True Wireless 4 review, we put these earbuds through weeks of real-world testing. We evaluate their acoustic performance, everyday comfort, upgraded ANC, call quality, battery limits, and companion app features to find out if they truly deserve the title of the ultimate audiophile wireless earbuds.
Quick Verdict & Review Scorecard
| Evaluation Metric | Score | Key Takeaway |
| Acoustic Fidelity | 9.9 / 10 | Unrivaled detail, expansive soundstage, and audiophile-grade tuning |
| Connectivity & Codecs | 9.8 / 10 | Future-proof Bluetooth 5.4, LE Audio, Auracast, and aptX Lossless |
| Ergonomics & Fit | 9.0 / 10 | Secure three-point fit with multiple fins and tips; slightly bulky but comfortable |
| Active Noise Cancellation | 9.1 / 10 | Strong adaptive ANC that handles low-end rumble and office hum with ease |
| Call Quality | 8.8 / 10 | 3-mic system with upgraded AI voice algorithms for clear indoor/outdoor calls |
| Battery Endurance | 9.2 / 10 | Generous 7.5 hours per charge, reaching up to 30 hours with the case |
| Overall Score | 9.4 / 10 | Editor’s Choice: The Absolute Best Sounding Wireless Earbuds on Android |
Technical Specifications at a Glance
| Specification | Hardware Details |
| Driver Unit | 7mm TrueResponse dynamic transducer |
| Processor | Qualcomm S5 Gen 2 Sound platform with Snapdragon Sound |
| Bluetooth Version | Bluetooth 5.4 (LE Audio, Auracast, and LC3 ready) |
| Supported Codecs | aptX Lossless, aptX Adaptive, AAC, SBC |
| Active Noise Cancellation | Hybrid Adaptive ANC with 3 microphones per earbud |
| Battery Life | Up to 7.5 hours (ANC off); 7 hours (ANC on); 30 hours total with case |
| Charging | USB-C and Qi wireless charging; 8-min quick charge for 1 hr playback |
| Dust & Water Resistance | IP54 (Dust, splash, and sweat resistant) |
| Weight | 6.2 grams per earbud; case weight is 66.4 grams |
| App Support | Sennheiser Smart Control (Android & iOS) |
1. Design, Build Quality, and Every-Day Fit
Sennheiser’s signature aesthetic has always leaned toward understated luxury, and the Momentum True Wireless 4 continues that tradition.
The earbud housing combines a metallic touch panel with a matte plastic chassis, featuring a metallic finish that gives it a premium appearance.
- The Fabric-Covered Case: A signature of the series, the fabric-wrapped case is as beautiful as ever, feeling sturdy and luxury-grade. It features a USB-C port on the front for easy access.
- IP54 Rating: Upgraded from the IPX4 splash resistance of previous models, the MTW4 now holds an IP54 rating, adding dust protection to its sweat and splash resistance, making it highly durable for workouts and outdoor use.
Momentum True Wireless 3 vs Momentum True Wireless 4 (Key Upgrades)
– MTW3: Bluetooth 5.2 | IPX4 splash protection | Standard grill design
– MTW4: Bluetooth 5.4 | IP54 dust & splash protection | Upgraded anti-clogging ear tips
Modular Fit Kit: Fins and Tips
At 6.2 grams per earbud, these aren’t the smallest buds on the market, but their ergonomic shape distributes weight evenly inside your outer ear. Sennheiser includes a comprehensive fit kit:
- 4 Sizes of Silicone Ear Tips: (XS, S, M, L) featuring a new internal foam mesh to prevent earwax from clogging the driver.
- 3 Sizes of Ear Fins: (S, M, L) which nestle against your ear’s concha ridge to lock the buds securely in place during jogging or workouts.
2. Acoustic Performance: True Audiophile Heritage
Let’s cut to the chase: this is where the Sennheiser Momentum True Wireless 4 review becomes a masterclass.
While rival brands rely on multi-driver hybrid systems or heavily processed DSP to generate exciting sound, Sennheiser’s single 7mm TrueResponse driver does it all organically. The result is a natural, dynamic, and expansive presentation that other earbuds simply cannot match.
Bass (The Low-End)
Low frequencies are rich, authoritative, and incredibly well-controlled. Unlike consumer-focused buds that artificially inflate the bass to the point of muddiness, the MTW4 gives you deep, sub-bass rumble only when the track calls for it. Rock kick drums have a physical “thump,” and electronic synth lines sound tight and textured without bleeding into the mid-frequencies.
Midrange (Vocals & Instruments)
The mid-band is forward, natural, and highly resolving. Acoustic guitars, piano keys, and vocals are rendered with stunning clarity. You can easily hear the natural breathiness of a vocalist or the scrape of fingers against guitar strings. Sound separation is outstanding; in complex orchestrations, you can isolate and track individual instruments across a wide, three-dimensional soundstage.
Treble (The Highs)
High frequencies are crystalline and airy, capturing intricate treble details—like the decay of a cymbal or the sizzle of high hats—without introducing any harsh sibilance or ear fatigue, even at higher volumes.
Snapdragon Sound & aptX Lossless
If your Android smartphone supports the Qualcomm Snapdragon Sound platform, the MTW4 can stream aptX Lossless, which delivers bit-by-bit CD-quality (16-bit/44.1kHz) audio over Bluetooth.
Even if your phone is limited to standard aptX Adaptive, the audio quality is spectacular, easily outshining the AAC/SBC performance found on competitors.
3. Active Noise Cancellation & Aware Mode
Historically, Sennheiser’s noise cancellation took a back seat to its sound. That is no longer the case. The MTW4 utilizes an upgraded Adaptive ANC system that monitors environmental noise in real-time to adjust its attenuation.
- Transit and Travel: Heavy drone sounds, like airplane engines and train rumbles, are heavily suppressed. It is not quite as “dead silent” as the Bose QuietComfort Ultra, but it easily gets you into your own quiet bubble on a busy commute.
- Mid-and-High Isolation: The updated mic placement and physical isolation do a fantastic job of cutting out office ambient hums, chatter, and keyboard clatter.
Transparent (Aware) Mode
Sennheiser’s Transparency Mode is natural, utilizing the external mics to seamlessly pass through outside noise. You can adjust the transparency level in the Smart Control app or have the earbuds automatically pause your music and initiate transparency the moment you start speaking.
4. Connectivity, App & Android Ecosystem
Equipped with Bluetooth 5.4, the MTW4 is packed with next-generation wireless technologies:
- Bluetooth Multipoint: Easily pair with two devices at once—transition from watching a video on your laptop to answering a phone call on your Android device.
- LE Audio & Auracast: Fully prepared for the future of wireless audio, including Auracast, which allows you to tune into shared public broadcasts (like airport TVs or museum tours).
- Robust Touch Controls: Responsive and fully customizable in the companion app. They can recognize single, double, triple, and long presses on each earbud for playback, volume, ANC, and voice assistant.
Sennheiser Smart Control App
The companion app is intuitive and loaded with customization options:
- 5-Band Equalizer: Finely tune your audio or save your custom presets.
- Sound Personalization: An interactive audio test that builds a customized sound profile based on your hearing.
- Sound Zones: Automatically apply specific EQ or ANC settings as you enter or leave locations like home, the gym, or the office.
5. Battery Life & Charging Performance
Battery endurance has been optimized for long-term reliability:
Battery Performance Breakdown:
– Standard Mode (ANC Off) : 7.5 Hours continuous listening
– Standard Mode (ANC On) : 7 Hours continuous listening
– Total Capacity with Case: Up to 30 Hours of backup playtime
– Quick Charge Capability : 8 minutes in case gives up to 1 Hour of playback
Whether you choose USB-C or placing the case on a Qi wireless pad, charging is effortless and convenient.
Sennheiser MTW4 vs Sony WF-1000XM5 vs Bose QC Ultra
Let’s see how Sennheiser stack up against the market’s heavy hitters:
| Feature | Sennheiser MTW4 | Sony WF-1000XM5 | Bose QuietComfort Ultra |
| Audio Quality | Winner (Audiophile Class) | Excellent (Balanced) | Very Good (Bass-Forward) |
| Noise Cancellation | Great | Excellent | Winner (Absolute Silence) |
| Codecs Supported | aptX Lossless, aptX Adaptive, AAC, SBC | LDAC, AAC, SBC | aptX Adaptive, AAC, SBC |
| Build & Fit Type | Bulky but secure (Fins & tips) | Smaller, lightweight (Foam tips) | Medium-sized (Stability bands) |
| Resistance Rating | IP54 (Dust & Splash) | IPX4 (Splash Only) | IPX4 (Splash Only) |
| Battery (Earbuds) | 7 Hours | 8 Hours | 6 Hours |
Pros and Cons
Pros
- Reference-grade audiophile sound with class-leading detail and wide staging
- Future-proof connectivity with Bluetooth 5.4, LE Audio, and Auracast
- aptX Lossless support on compatible Android devices
- Upgraded IP54 dust and splash resistance
- Highly custom fit with multiple ear tips and stability fins
- Fabric-covered premium charging case with Qi wireless charging
- Feature-rich companion app with advanced EQ and Sound Zones
Cons
- Larger earbud footprint than some ultra-compact competitors
- Active Noise Cancellation, though great, is slightly behind Bose’s isolation
- Higher entry price point
Frequently Asked Questions (FAQ)
Is the Sennheiser Momentum True Wireless 4 worth the upgrade over the MTW3?
Yes. The upgrade is highly recommended for the future-proof Bluetooth 5.4 features (LE Audio, Auracast), improved IP54 dust/water rating, Qualcomm’s S5 Gen 2 platform for Lossless audio, and significantly improved wireless stability and ANC algorithms.
How does aptX Lossless work on Android?
aptX Lossless is part of the Snapdragon Sound suite. When paired with a compatible Android phone running a Snapdragon processor that supports Lossless, it automatically detects and transmits 16-bit/44.1kHz audio without any lossy compression, giving you wire-like acoustic quality.
Can the touch gestures be completely disabled?
Yes. If you find yourself accidentally triggering them when adjusting the buds, you can completely customize or disable the touch controls in the Sennheiser Smart Control app.
Final Verdict: Should You Buy the Sennheiser MTW4?
To conclude our Sennheiser Momentum True Wireless 4 review, Sennheiser has built the ultimate daily companion for listeners who refuse to compromise on sound. By addressing previous software stability quirks, upgrading the IP rating to IP54, and adding future-proof Bluetooth 5.4 features alongside aptX Lossless, they have delivered their most refined, high-performing wireless earbud ever.
If your primary goal is to hear your music exactly as the artists and audio engineers intended—rich, resolving, and expansive—the Sennheiser Momentum True Wireless 4 is the best wireless earbud for your Android device.
Read our complete roundup of the Best Wireless Earbuds for Android to see how the MTW4 stacks up against competitors, or explore our in-depth reviews of the Sony WF-1000XM5 and Bose QuietComfort Ultra Earbuds to evaluate their alternative noise-canceling and ergonomic features.