Bose QuietComfort Ultra Headphones 2nd Gen vs Sennheiser HD 660S2
Verdict
Our overall take, at a glance
Key takeaways
- Bose QuietComfort Ultra Headphones 2nd Gen leads Sennheiser HD 660S2 overall by 46 points (82 vs 36 out of 100).
Bose QuietComfort Ultra Headphones 2nd Gen leads overall
Bose QuietComfort Ultra Headphones 2nd Gen
82
Sennheiser HD 660S2
36
In-depth analysisAI
AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Jun 2026.
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.
Bose QuietComfort Ultra Headphones 2nd Gen
Sennheiser HD 660S2
Physical Comparison
Weight, side by side
Bose QuietComfort Ultra Headphones 2nd GenSennheiser HD 660S2
Bose QuietComfort Ultra Headphones 2nd Gen is 4 g (2%) heavier than Sennheiser HD 660S2.
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Detailed Specifications
The full spec sheet, side by side