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Product comparison

Sennheiser HD 660S2 vs Sony WH-1000XM5: Which Should You Buy?

Compare Sennheiser HD 660S2 and Sony WH-1000XM5 by noise cancellation, comfort, call quality, battery life, sound tuning, app support, and return-window.

Updated 2026-07-30

Sennheiser Sennheiser HD 660S2

Sennheiser HD 660S2

$399

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Sony Sony WH-1000XM5

Sony WH-1000XM5

$299

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Buying decision

Sennheiser HD 660S2 is the more defensible choice for home audiophile listening and open-back soundstage; Sony WH-1000XM5 is the better fit when travel ANC and tunable sound matters more than the price gap and its different ownership trade-offs.

Put Sennheiser HD 660S2's strengths in home audiophile listening and open-back soundstage against Sony WH-1000XM5's fit for travel ANC and tunable sound. The first model asks you to accept premium anc pricing is easy to overpay for if you mostly stay home; the second asks you to accept case bulk or clamp force will bother some all-day wearers. Choose the product whose drawback is less likely to interrupt the way you actually use it, then confirm the exact US configuration before checkout.

Sennheiser HD 660S2

Pick Sennheiser HD 660S2 if its strengths match your routine

Sennheiser HD 660S2 makes sense for buyers who want open-back audiophile, home listening, detail and can find it near $399. Its main advantage is not one isolated spec; it is the way the price, support story, and daily ownership trade-offs line up for shoppers who already know they want this type of headphones option.

Sony WH-1000XM5

Pick Sony WH-1000XM5 if you value its trade-off more

Sony WH-1000XM5 is the better starting point for shoppers who want discounted ANC, travel, work focus. At about $299, it should be judged by whether those strengths remove a real daily problem. If they do, the competing product's lower price or different feature mix may matter less.

Key differences

  • Sennheiser HD 660S2 is positioned around open-back audiophile and home listening, while Sony WH-1000XM5 leans toward discounted ANC and travel.
  • The price context matters: Sennheiser HD 660S2 is tracked near $399, while Sony WH-1000XM5 is tracked near $299.
  • Sennheiser HD 660S2's main watch-out is Street pricing can change quickly, whereas Sony WH-1000XM5's main watch-out is Street pricing can change quickly.
  • Both products belong in the same headphones shortlist, but they solve different buying problems rather than being interchangeable spec-table neighbors.

Winner by use case

travel noise cancellation

Sennheiser HD 660S2

Sennheiser HD 660S2 is the better match for travel noise cancellation because its buyer profile, pricing context, and day-to-day strengths line up more cleanly with that job than the alternative on this page.

work calls

Sony WH-1000XM5

Sony WH-1000XM5 is the better match for work calls because its buyer profile, pricing context, and day-to-day strengths line up more cleanly with that job than the alternative on this page.

comfort

Sennheiser HD 660S2

Sennheiser HD 660S2 is the better match for comfort because its buyer profile, pricing context, and day-to-day strengths line up more cleanly with that job than the alternative on this page.

ecosystem convenience

Sony WH-1000XM5

Sony WH-1000XM5 is the better match for ecosystem convenience because its buyer profile, pricing context, and day-to-day strengths line up more cleanly with that job than the alternative on this page.

Price and buying timing

Sennheiser HD 660S2 is tracked at $399, about 20% below its $499 launch reference, while Sony WH-1000XM5 is tracked at $299, about 25% below its $399 launch reference. Sony WH-1000XM5 currently carries the lower editorial reference by $100, but that saving only matters if it still covers the features you use every week. Sennheiser HD 660S2 remains a current-market option, but the exact US SKU and checkout price still need a retailer check; Sony WH-1000XM5 remains a current-market option, but the exact US SKU and checkout price still need a retailer check. These figures are not live offers, so re-check retailer pricing and return terms before buying.

Recommendation

Quick verdict

Sony WH-1000XM5 is the stronger default for travel ANC and tunable sound, mainly because it pulls ahead on noise cancellation and sound quality. Pick Sennheiser HD 660S2 only if you specifically need what it does better day to day.

Winner for most buyers

Sony WH-1000XM5

Choose Sony WH-1000XM5 if travel ANC matters more than chasing the absolute top-tier option. Skip it if folding design is less compact than xm4.

Sennheiser HD 660S2

Overall score: 6.5 / 10

Best for: home audiophile listening, open-back soundstage

Sony WH-1000XM5

Overall score: 8.6 / 10

Best for: travel ANC, tunable sound

Side-by-side

Specification comparison

18 tracked specs across 7 groups

Every value shows its editorial trust state. “Needs confirmation” means the field has not completed field-level source review; it does not mean the value is known to be wrong.

Sennheiser HD 660S2
Sony WH-1000XM5
Design
Type
Open-back wired headphones
Needs confirmation
Over-ear wireless headphones
Source citedSony
Form Factor
Open-back over-ear
Needs confirmation
Closed-back over-ear
Source citedSony
Weight
Around 260g without cable
Needs confirmation
250g
Source citedSony
Audio
Driver Size
38mm dynamic drivers
Needs confirmation
30mm carbon fiber composite drivers
Source citedSony
Noise Cancellation
No ANC (open-back design)
Needs confirmation
Active noise cancellation
Source citedSony
Transparency / Ambient
Fully open design
Needs confirmation
Ambient Sound mode
Source citedSony
Sound Profile
Natural, slightly warm audiophile signature
Needs confirmation
Tunable Sony signature via Headphones Connect
Needs confirmation
Battery
Battery Life
Passive wired design
Needs confirmation
Up to 30 hours with NC on / 40 hours with NC off
Source citedSony
Battery With Case
Not applicable
Needs confirmation
Not applicable
Needs confirmation
Charging
No charging required
Needs confirmation
USB-C charging
Source citedSony
Quick Charge
Not applicable
Needs confirmation
3 minutes for up to 3 hours
Source citedSony
Connectivity
Bluetooth Codecs
Wired only
Needs confirmation
SBC, AAC, LDAC
Source citedSony
Bluetooth
Wired only
Needs confirmation
Bluetooth 5.2
Source citedSony
Multipoint
Not applicable
Needs confirmation
Yes
Source citedSony
Durability
Water Resistance
Not applicable
Needs confirmation
Not water-sport rated
Needs confirmation
Calls
Microphone System
No dedicated call mic system
Needs confirmation
8-mic AI call system / multi-mic ANC array
Needs confirmation
Usability
Controls
Source/device controls only
Needs confirmation
Touch controls
Needs confirmation
App Support
No companion app required
Needs confirmation
Sony Headphones Connect
Needs confirmation
Deeper editorial notes

When Sennheiser HD 660S2 is the safer start

Start with Sennheiser HD 660S2 if you want a clearer value story, fewer ownership surprises, and a purchase that is easier to defend after the return window closes. It is usually the better default when you already know the use case, care about total cost, and do not need to chase every premium feature on the shortlist. The main caution is that a neighboring model can still win if current US pricing, warranty terms, or ecosystem fit changes the math at checkout.

When Sony WH-1000XM5 is worth the jump

Choose Sony WH-1000XM5 when its advantages remove a problem you already feel day to day, whether that is comfort, performance headroom, battery behavior, software support, ports, or ecosystem fit. The extra spend is easier to justify when those strengths show up in weekly routines rather than one-off benchmarks. If those advantages do not map to your routine, keep the budget and buy the more practical option instead of stretching for a feature you will rarely use.

How to make the final call

Compare the two products around the jobs you repeat every week, not the one benchmark that looks best in isolation. Check current street pricing, return windows, warranty coverage, and any accessories you would still need to buy. If both remain close, prefer the option with the cleaner support path, better retailer return policy, and lower total setup cost across North America channels.

Alternatives if neither is right

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