Sennheiser · Headphones
Sennheiser HD 660S2
Sennheiser HD 660S2 is positioned for home audiophile listening and open-back soundstage at a $399 editorial reference. Its main advantage should outweigh this documented drawback: Premium ANC pricing is easy to overpay for if you mostly stay home. The linked source confirms model identity, but purchase-critical specifications remain unverified until field-level review.
Buying verdict
Sennheiser HD 660S2 is best suited to home audiophile listening and open-back soundstage. Compare alternatives if this documented drawback would undermine that fit: Premium ANC pricing is easy to overpay for if you mostly stay home.
Editorial score
6.5 / 10
Limited source confidence
Reference price
$399
Released
Feb 1, 2023
Reference price, not a live offer. Editorial data date Jul 27, 2026. Specs and availability can vary by configuration, region, and retailer. Status: available.
Official product reference found — field-level verification pending. 1 cited page is listed for product identity or support, but none has been used to verify an individual specification. Treat all listed specs as editorial reference data and confirm purchase-critical details with the manufacturer.
These links open manufacturer or retailer pages so you can check live availability. Prices on this page are editorial references, not offers. Rankings and scores are not influenced by commercial relationships.
Should you buy it?
A practical ownership call
- Buy it if you want home audiophile listening and open-back soundstage.
- Skip it if confirm sennheiser hd 660s2's type, noise cancellation, and battery for the exact us configuration.
- Check current US street pricing before paying launch-level money.
Pros and cons
Pros
- Strong everyday fit for home audiophile listening
- Primary use case for Sennheiser HD 660S2 is clearly defined around home audiophile listening and open-back soundstage
- Shortlist role for Sennheiser HD 660S2 is clearly defined around home audiophile listening and open-back soundstage
Cons
- Confirm Sennheiser HD 660S2's type, noise cancellation, and battery for the exact US configuration
- Sennheiser HD 660S2's $399 figure is an editorial reference, not a live retailer offer
- Sennheiser HD 660S2 has field-level citations for 0 of 18 listed specifications
Key specs
- Type
- Open-back wired headphones Needs confirmation
- Form Factor
- Open-back over-ear Needs confirmation
- Driver Size
- 38mm dynamic drivers Needs confirmation
- Noise Cancellation
- No ANC (open-back design) Needs confirmation
- Transparency / Ambient
- Fully open design Needs confirmation
- Sound Profile
- Natural, slightly warm audiophile signature Needs confirmation
- Battery Life
- Passive wired design Needs confirmation
- Battery With Case
- Not applicable Needs confirmation
Buying scores
These are editorial estimates, not laboratory measurements. Limited source confidence; 0% of listed specification fields currently have field-level citations.
Noise Cancellation
1
Sound Quality
9.3
Comfort
8.7
Battery
10
Call Quality
1
Value
8.4
Compare
Compare with similar products
Choose any headphones alternative. Curated pairs open an editorial decision; every other pair opens a specs-only comparison.
Alternatives
Sony
Sony WH-1000XM6
WH-1000XM6 is a strong premium travel shortlist candidate when ANC, multipoint, codec choice, and long rated battery life all matter. A discounted WH-1000XM5, Bose QuietComfort, or Sennheiser Momentum model is the better value when comfort or sound preference is similar in a personal trial.
Apple
AirPods Max 2
AirPods Max 2 is best suited to premium Apple over-ear and spatial audio. Compare alternatives if this documented drawback would undermine that fit: Multipoint and codec support still vary by phone ecosystem.
Popular comparisons
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Compare Sennheiser HD 660S2 and AirPods Max USB-C by noise cancellation, comfort, call quality, battery life, sound tuning, app support, and return-window.
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.
Sony WH-1000XM6 vs Sennheiser HD 660S2: Which Should You Buy?
Compare Sony WH-1000XM6 and Sennheiser HD 660S2 by noise cancellation, comfort, call quality, battery life, sound tuning, app support, and return-window.
Availability, sources, and full notes
US availability
Sennheiser HD 660S2 is tracked as a US-market option through official brand channels and mainstream electronics retailers.
Common retailers
Sennheiser, Amazon, Best Buy, Walmart, Target
Sources and verification
- Sennheiser HD 660S2 product page · Sennheiser · accessed Aug 24, 2026 · US Product reference only — individual specifications are not yet field-verified.
Editorial specification note
The cited Sennheiser page confirms model identity as of 2026-08-24. Individual specification fields remain unknown until field-level review.
Editorial price note
Sennheiser US launch and street-price patterns are tracked as editorial USD references, not live retailer checkout prices.
Specifications
18 tracked specs across 7 groups · An official product reference is listed, but no specification has a field-level citation yet.
Design
- Type
- Open-back wired headphones Needs confirmation
- Form Factor
- Open-back over-ear Needs confirmation
- Weight
- Around 260g without cable Needs confirmation
| Type | Open-back wired headphones Needs confirmation |
|---|---|
| Form Factor | Open-back over-ear Needs confirmation |
| Weight | Around 260g without cable Needs confirmation |
Audio
- Driver Size
- 38mm dynamic drivers Needs confirmation
- Noise Cancellation
- No ANC (open-back design) Needs confirmation
- Transparency / Ambient
- Fully open design Needs confirmation
- Sound Profile
- Natural, slightly warm audiophile signature Needs confirmation
| Driver Size | 38mm dynamic drivers Needs confirmation |
|---|---|
| Noise Cancellation | No ANC (open-back design) Needs confirmation |
| Transparency / Ambient | Fully open design Needs confirmation |
| Sound Profile | Natural, slightly warm audiophile signature Needs confirmation |
Battery
- Battery Life
- Passive wired design Needs confirmation
- Battery With Case
- Not applicable Needs confirmation
- Charging
- No charging required Needs confirmation
- Quick Charge
- Not applicable Needs confirmation
| Battery Life | Passive wired design Needs confirmation |
|---|---|
| Battery With Case | Not applicable Needs confirmation |
| Charging | No charging required Needs confirmation |
| Quick Charge | Not applicable Needs confirmation |
Connectivity
- Bluetooth Codecs
- Wired only Needs confirmation
- Bluetooth
- Wired only Needs confirmation
- Multipoint
- Not applicable Needs confirmation
| Bluetooth Codecs | Wired only Needs confirmation |
|---|---|
| Bluetooth | Wired only Needs confirmation |
| Multipoint | Not applicable Needs confirmation |
Durability
- Water Resistance
- Not applicable Needs confirmation
| Water Resistance | Not applicable Needs confirmation |
|---|
Calls
- Microphone System
- No dedicated call mic system Needs confirmation
| Microphone System | No dedicated call mic system Needs confirmation |
|---|
Usability
- Controls
- Source/device controls only Needs confirmation
- App Support
- No companion app required Needs confirmation
| Controls | Source/device controls only Needs confirmation |
|---|---|
| App Support | No companion app required Needs confirmation |