QuietComfort 35 II vs Momentum 4
Audio · 2,992 owner opinions across both productsBuy the Momentum 4.
Reddit's answer is the Sennheiser Momentum 4. Buy it if you prioritize sound quality and comfort and can live with an elevated repair risk. The QuietComfort 35 II is a Risky Buy — buy only if you prioritize all-day comfort and reliable noise cancellation on a budget. At $230 against $379 today, the QuietComfort 35 II costs $149 more and carries the weaker verdict.
Built from 2,992 owner opinions across both products · 439 long-term reports · how we decide
What owners say
58% would buy againof 1,387 owners
First 6 months 55% → long-term 74%+19of 270 long-term owners
59% would buy againof 1,605 owners
First 6 months 53% → long-term 76%+23of 169 long-term owners
What you’ll regret
No single component dominates
~1 in 3 long-term owner reports describe a failure — primarily the power switch, Bluetooth connectivity, and battery — typically surfacing between 12 and 73 months in. Of tracked warranty outcomes, 89 were resolved and 69 were not, so results lean resolved but a meaningful share lands outside coverage. Failure rate is about typical for wireless headphones: the category baseline is 24% serious failures versus 25% here.
Typically reported months 12–72 · 270 long-term owners
No single component dominates
Roughly 1 in 3 long-term reports mention a failure, spread across battery, power button, connectivity, and headband fabric — onset typically within the first year. Of tracked warranty outcomes, 57 landed unresolved versus 40 resolved, so failures usually land outside warranty coverage. Failure rate is about typical for wireless headphones: the category baseline is 24% serious failures, matching this product's 24%.
Typically reported months 1–12 · 169 long-term owners
These are the share of long-term owner reports that mention a failure, not the share of units that fail — owners with working units mostly don’t post.
Price and value
Gap today: $149 — Momentum 4 is the cheaper buy.
Price links carry an affiliate tag. It never changes the verdict.
long-haul travel comfort and build durability matter more than pristine audio fidelity.
sound quality and battery life matter more to you than airtight long-term reliability.
Questions people ask about this matchup
Which is better, the QuietComfort 35 II or the Momentum 4?
Reddit's answer is the Sennheiser Momentum 4. Buy it if you prioritize sound quality and comfort and can live with an elevated repair risk. The QuietComfort 35 II is a Risky Buy — buy only if you prioritize all-day comfort and reliable noise cancellation on a budget.
Which is more reliable, the QuietComfort 35 II or the Momentum 4?
Closer than the verdicts suggest: 25% of long-term QuietComfort 35 II reports mention a serious failure against 24% for the Momentum 4 — a gap within noise. Warranty outcomes differ more: 41% of Momentum 4 claims were resolved against 56% for the QuietComfort 35 II.
Is the QuietComfort 35 II worth $149 more than the Momentum 4?
At $379 against $230 today, the QuietComfort 35 II costs 65% more and carries the weaker verdict (Risky Buy against the Momentum 4's Buy If) — the extra money buys features, not a better ownership record.
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