Real owners rate these about evenly: 61% of 231 Sennheiser HD 660S2 owners recommend it, vs 60% of 359 for the Sony WH-1000XM5.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
“I actually love the fact that they won't fold. Folding make them weaker and they rattle a lot.”— @LLANTALOBOTOMIK on YouTube
“I think not being foldable will eventually be better for durability in the long term”— @RaedVS on YouTube
“Wow the sound quality sounds just like my phone speakers”— @Gpinky765 on YouTube
Real owners rate these about evenly: 61% of 231 Sennheiser HD 660S2 owners recommend it, vs 60% of 359 for the Sony WH-1000XM5.
Owners point the Sennheiser HD 660S2 at hD6x0 owners wanting more bass extension and treble sparkle, and all-day listeners who want a warm, fatigue-free sound.
Owners point the Sony WH-1000XM5 at frequent flyers and commuters wanting top-tier noise cancellation, and office workers on frequent calls and video meetings.
The most-cited downside of the Sennheiser HD 660S2 is dark, veiled or muffled-sounding presentation. For the Sony WH-1000XM5, it's hinges crack or break, often within a year.