Sony WH-1000XM4 vs Sennheiser HD 660S2
Verdict
Our overall take, at a glance
Key takeaways
- Sony WH-1000XM4 leads Sennheiser HD 660S2 overall by 56 points (87 vs 31 out of 100).
- Sony WH-1000XM4 stands out on Comfort & Build Weight: 254 g.
Sony WH-1000XM4 leads overall
$349 at launch
Sony WH-1000XM4
87
Sennheiser HD 660S2
31
Why it stands out
- Comfort & Build Weight: 254 g
In-depth analysisAI
AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Jun 2026.
Sony WH-1000XM4
The Sony WH-1000XM4 is a pair of premium wireless over-ear headphones designed for consumers seeking top-tier noise cancellation and audio performance. Serving as a refined successor to the popular XM3, this model focuses on iterative performance and usability upgrades for daily commuters and travelers.
Best for Commuters and travelers prioritizing high-quality noise isolationBest for Users looking for a polished upgrade to the older XM3 model
Pros
- Refined performance and design updates over the predecessor
- Excellent reputation for active noise cancellation and sound isolation
Cons
- Confusing and highly convoluted product naming convention
Sennheiser HD 660S2
The Sennheiser HD 660S2 is a reference headphone model known for its clear, detailed, and warm sound signature. The design includes rich black velour earpads, and the headphones are noted for being lightweight. It provides impressive vocal clarity in the midrange.
Best for vocal trackingBest for classical musicBest for rock
Pros
- Features a fuller and warmer bass response than the original HD 660S
- The sound is described as clear, crisp, and detailed without sounding overly analytical
- Provides excellent detail and separation, with vocals prominently featured
- Is noted for being comfortable for long listening sessions due to light weight and earpads
Cons
- Can have a rather tight clamping force out of the box
- May not be suitable for genres requiring extremely thunderous bass (e.g., EDM or rap)
Value for Money
Which is the better deal for the price
Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.
Sony WH-1000XM4
Sennheiser HD 660S2
Physical Comparison
Weight, side by side
Sony WH-1000XM4Sennheiser HD 660S2
Sennheiser HD 660S2 is 6 g (2%) heavier than Sony WH-1000XM4.
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Review Videos
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Detailed Specifications
The full spec sheet, side by side