Sennheiser Momentum True Wireless 4 vs Sony WF-1000XM6

Sennheiser Momentum True Wireless 4

Sennheiser

8.5

Excellent

Sony WF-1000XM6

Sony

8.4

Best-in-class ANC, stagnant battery

Sennheiser Momentum True Wireless 4

What Reviewers Agree On

Sound quality is the best in class — the most detailed, natural-sounding true wireless earbuds available
aptX Lossless and aptX Adaptive codec support delivers genuine high-resolution audio advantage
Build quality is premium with real materials and a refined design
ANC has improved meaningfully over MTW3 and is now genuinely useful

Deal Breakers

ANC still lags behind Sony XM5 and Bose QC Ultra — if noise cancellation is your priority, look elsewhere

Pros & Cons

Sennheiser Momentum True Wireless 4

Pros

Sound quality is the best in class — the most detailed, natural-sounding true wireless earbuds available
aptX Lossless and aptX Adaptive codec support delivers genuine high-resolution audio advantage
Build quality is premium with real materials and a refined design
ANC has improved meaningfully over MTW3 and is now genuinely useful

Cons

Detailed Comparison

Sound Quality

Sennheiser Momentum True Wireless 4

The audiophile benchmark for true wireless — Sennheiser's 7mm TrueResponse drivers deliver exceptional detail, clarity, and naturalness.

Sennheiser's 7mm TrueResponse transducers produce the most detailed, naturally balanced sound in any true wireless earbud
aptX Lossless support enables CD-quality wireless audio — an audible improvement over AAC and standard aptX on compatible devices
Soundstage is remarkably wide for earbuds, creating an almost speaker-like presentation that audiophiles love
The Sennheiser Smart Control app provides a parametric EQ for precise sound customization beyond simple presets

Sony WF-1000XM6

All-new drivers plus Sony's LDAC/DSEE Extreme and a deep EQ app draw strong praise, though a vocal minority argues the tuning still trails the best-sounding rivals in the price class.

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Sony WF-1000XM6

What Reviewers Agree On

Class-leading active noise cancellation — Sony's QN3e processor and added mics give ~88% measured loudness reduction, modestly ahead of the XM5 and only just behind the AirPods Pro 3
Excellent, customisable sound with LDAC, DSEE Extreme and one of the deepest EQ apps in the category
Much-improved comfort: the body is ~11% smaller and reshaped, with an in-app fit test, so it can be worn for hours
Significantly better call/microphone quality than previous Sony earbuds
A smaller, sleeker charging case with Qi wireless charging and ~3-5 min quick-charge for ~60 min playback
Stable multipoint Bluetooth to any two devices regardless of ecosystem

Deal Breakers

Battery life is unchanged for three generations — still 8h ANC-on / 24h with case, with real-world figures often 6-7h
Price rose to $329/$330, a $30 hike over the XM5 for incremental gains
Top ANC and sound depend heavily on getting a good ear-tip seal — a poor fit noticeably degrades both
Sony's track record of battery degradation and update-bricked older models (XM4) is a real trust concern for long-term buyers

Sony WF-1000XM6

Pros

Class-leading active noise cancellation — Sony's QN3e processor and added mics give ~88% measured loudness reduction, modestly ahead of the XM5 and only just behind the AirPods Pro 3
Excellent, customisable sound with LDAC, DSEE Extreme and one of the deepest EQ apps in the category
Much-improved comfort: the body is ~11% smaller and reshaped, with an in-app fit test, so it can be worn for hours
Significantly better call/microphone quality than previous Sony earbuds
A smaller, sleeker charging case with Qi wireless charging and ~3-5 min quick-charge for ~60 min playback
Stable multipoint Bluetooth to any two devices regardless of ecosystem

Cons

Battery life is unchanged for three generations — still 8h ANC-on / 24h with case, with real-world figures often 6-7h
Price rose to $329/$330, a $30 hike over the XM5 for incremental gains
Top ANC and sound depend heavily on getting a good ear-tip seal — a poor fit noticeably degrades both
Sony's track record of battery degradation and update-bricked older models (XM4) is a real trust concern for long-term buyers

Comfort & Fit

Sennheiser Momentum True Wireless 4

Comfortable with a secure fit, though slightly larger and heavier than the most compact competitors.

Ergonomic design with multiple tip sizes provides a secure, comfortable fit for most ear shapes
Slightly larger than Sony XM5 and Pixel Buds Pro 2, which may be noticeable during extended wear

Sony WF-1000XM6

The reshaped, ~11% smaller housing is the most-praised practical change — most testers can wear them for hours — but because ANC and sound hinge on the seal, ear-tip fit is more consequential here than on rivals.

Sony reduced the earbud body ~11% versus the XM5 and reshaped the housing to follow the contours of the inner ear; eartips are slightly larger.
Far more comfortable than the previous generation — a genuinely all-day fit for this tester.
Wearable nearly all day, unlike the XM4s/XM5s or Bose buds which this reviewer can't tolerate past ~3 hours.
An in-app fit test and better-insulating ear tips help you find the seal the ANC and sound depend on.
Designed around memory-foam-style tips — swapping them away sacrifices two of the buds' biggest strengths (seal and ANC).
Long-term: 'almost there' — after living with them the experience still feels a touch fit-dependent and fragile for the price.