Pros
- Best-in-class sound — TrueResponse drivers earn top audio marks among premium earbuds
- Broadest hi-res codec support: aptX Lossless and Adaptive plus LC3 for Snapdragon Android
- Deep parametric EQ and fit test — the most tuning control here
- Strong battery (7 hrs ANC / 30 total) and a rare 2-year warranty; often well under $300 on sale
Cons
- Noise cancellation trails the Sony and Bose at this price
- Bulky housing fits smaller ears poorly; fin tips needed for a secure seal
- Call-mic quality is a consistent weak point — muffled, weak wind rejection
- Capacitive touch controls can be finicky; hi-res codecs need a Snapdragon Android phone (iPhone gets AAC only)
Specifications
- Driver
- 7mm TrueResponse dynamic — class-leading sound
- Codecs
- aptX Lossless / Adaptive, LC3, AAC, SBC (Snapdragon Sound)
- Battery
- 7 hrs ANC on; 30 hrs total with case; Qi wireless
- Noise cancelling
- Hybrid adaptive — good, but behind Sony/Bose
- Bluetooth
- 5.4 with LE Audio / Auracast; multipoint (2 devices)
- Water resistance
- IP54 (dust & splash)
- App / EQ
- Smart Control — full parametric EQ + fit test
- Warranty
- 2-year (longer than Sony/Apple/Bose/Technics)
Performance
If sound quality is your priority, the Momentum True Wireless 4 is the pick. Its 7mm TrueResponse drivers earn the highest audio marks in the mainstream class, and it backs that with the widest codec support here — aptX Lossless and Adaptive for compatible Android phones — plus a genuinely deep parametric EQ for dialing in the signature. Battery life is strong. Where it gives ground is the rest of the earbud job: ANC is good but a clear step behind the Sony and Bose, and — the recurring knock across reviews — the call microphones are mediocre, so it’s not the pick for heavy phone use. It’s a sound-first earbud, and on that axis it leads.
Build Quality
Build is premium in materials (metallic accents, IP54) but practically compromised by size: the housing is bulky and the circular nozzles fit smaller ears poorly, often needing the fin tips for a secure seal. Sennheiser says it fixed the battery-supplier issue that hurt the previous generation and added a Battery Protect mode, which is reassuring, and the 2-year warranty is the longest in this group — a real plus. As with all sealed earbuds the battery isn’t replaceable, capping lifespan, but the longer warranty and improved cell partially offset that. Minor firmware connectivity quirks have been noted and are fixable via updates.
Value Assessment
Value is better than the $300 MSRP suggests, because the MTW4 is frequently discounted well below it (often $180–$200, and lower at times). At those prices, the best sound in the class plus aptX Lossless, deep EQ, and a 2-year warranty is a genuine bargain for an audiophile. You’re paying for sound and tuning, not ANC or call quality, so the value is highest for the listener who weights audio fidelity above noise-blocking and phone calls — and who has a Snapdragon Android phone to unlock the hi-res codecs.
Who Should Buy It
Sound-first listeners and audiophiles who want the best audio quality and deepest EQ in a mainstream earbud — especially Snapdragon Android users who can use aptX Lossless, and anyone who values the longer 2-year warranty.
Who Should Skip It
Anyone who needs class-leading ANC (the Sony or Bose) or strong call quality (the Technics or AirPods Pro 3), people with smaller ears, and iPhone users who can’t access its hi-res codecs.
Final Recommendation
The Sennheiser Momentum True Wireless 4 is our Best for Sound pick: the best-sounding mainstream earbuds, with the widest hi-res codec support, the deepest EQ, and a 2-year warranty — often at a real discount. Its ANC, call mics, and fit are the compromises, so it’s the specialist choice for audio fidelity rather than the all-rounder (that’s the Sony) or the pick for calls (the Technics).