Based on our overall comparison score, Nothing Headphone (a) rates higher at 84/100 versus 35/100 for Sennheiser HD 660S2 — a 49-point lead. Nothing Headphone (a) is the stronger overall pick, though the right choice still depends on which specs matter most to you; the full spec table above breaks down every difference.
Nothing Headphone (a) vs Sennheiser HD 660S2
Verdict
Our overall take, at a glance
Key takeaways
- Nothing Headphone (a) leads Sennheiser HD 660S2 overall by 50 points (79 vs 29 out of 100).
- Nothing Headphone (a) stands out on Audio Driver Size: 40 mm.
Nothing Headphone (a) leads overall
Nothing Headphone (a)
79
Sennheiser HD 660S2
29
Why it stands out
- Audio Driver Size: 40 mm
In-depth analysisAI
AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Jun 2026.
Nothing Headphone (a)
AI analysis isn't ready yet
We haven't generated an in-depth write-up for Nothing Headphone (a) yet. The specs, scores and strengths profile above still cover it — check back later for the AI summary.
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.
Nothing Headphone (a)
Sennheiser HD 660S2
Physical Comparison
Weigh them up, then compare real dimensions in 3D
Nothing Headphone (a)Sennheiser HD 660S2
Nothing Headphone (a) is 50 g (19%) heavier than Sennheiser HD 660S2.
Review Videos
Hand-picked expert reviews for each product
Detailed Specifications
The full spec sheet, side by side
Frequently Asked Questions
Common questions about Nothing Headphone (a) vs Sennheiser HD 660S2 comparison
Nothing Headphone (a) and Sennheiser HD 660S2 are compared side by side above across every spec in the headphones category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 84/100 for Nothing Headphone (a) and 35/100 for Sennheiser HD 660S2.
At launch, Nothing Headphone (a) was the more affordable option ($199) versus Sennheiser HD 660S2 ($599). Weigh that against the overall scores (84/100 vs 35/100) and the value-for-money meter above to judge whether the higher-rated model justifies its price for your needs. Current retail prices vary — check the retailer.
If you want the higher-rated headphones option overall, Nothing Headphone (a) (84/100) edges out Sennheiser HD 660S2 (35/100). But if Sennheiser HD 660S2 is cheaper or stronger on the specific specs you care about, it can still be the better buy — use the spec table and strengths profile above to decide.