Sony WH-1000XM6
Sennheiser HD 660S2 700240
What Buyers Say
Sony WH-1000XM6
The Sony WH-1000XM6 earns praise for its exceptional noise cancellation, clear sound quality, and comfortable fit for many users, with several calling it the best headphones they've owned. However, a significant number of reviews highlight serious drawbacks: uncomfortable clamping force and shallow earcups causing pain, buggy multipoint Bluetooth connectivity, a fingerprint-prone finish, and disappointing customer service regarding warranty repairs and promised free gifts. While the ANC and audio are top-tier, comfort and reliability issues prevent it from being a universal recommendation.
Pros
- Exceptional noise cancellation
- Clear and detailed sound quality
- Comfortable for many users
- Long battery life
- Foldable design
Cons
- Uncomfortable clamping force
- Shallow earcups causing pain
- Buggy multipoint Bluetooth
- Fingerprint-prone finish
- Poor customer service
Sennheiser HD 660S2 700240
The Sennheiser HD 660S2 is praised for its natural, detailed sound with warm bass and lifelike vocals, making it ideal for critical listening. However, some users find the soundstage narrow and the build quality plasticky for the price, and a few report minimal improvement over cheaper models. Overall, it delivers a premium audio experience when paired with a good DAC/amp.
Pros
- Natural and detailed sound
- Warm bass with good punch
- Lifelike vocals
- Excellent for critical listening
- Replaceable parts (cables, pads)
Cons
- Narrow soundstage
- Plasticky build quality for price
- Requires good DAC/amp to shine
- Heavy for long sessions initially
- Minimal improvement over cheaper models
Scores
Specifications
| Sony WH-1000XM6 | Sennheiser HD 660S2 700240 | |
|---|---|---|
| Design | ||
| Form Factor | over-ear | over-ear |
| Open/Closed | closed | open |
| Foldable | ✓ | ✓ |
| Weight | 0.25 kg★ | 0.26 kg |
| Ear Cushion | synthetic leather | velour |
| Headband | synthetic leather | Aluminio |
| Audio | ||
| Driver Type | dynamic | dynamic |
| Driver Size | 30 mm | 42 mm★ |
| Drivers | 1★ | — |
| Freq Min | 4 Hz★ | 8 Hz |
| Freq Max | 40 kHz | 42 kHz★ |
| Impedance | 48 Ω | 300 Ω |
| Sensitivity | 103 dB | 104 dB★ |
| Hi-Res Audio | ✓★ | ✗ |
| Codecs | LDAC | Sennheiser HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black (Renewed) |
| Surround | Sony WH-1000XM6 The Best Noise Cancelling Wireless Headphones, HD NC Processor QN3, 12 Microphones, Studio-Quality, New Sandstone Color | Sony WH-1000XM6 The Best Noise Cancelling Wireless | Sony | Sa | Sennheiser HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black (Renewed) | Sennheiser HD 660S2 - Wired |
| Noise Control | ||
| ANC | ✓★ | ✗ |
| ANC Type | adaptive | — |
| Transparency | ✓★ | ✗ |
| Connectivity | ||
| Wireless | ✓★ | ✗ |
| Bluetooth | 5.3★ | — |
| Profiles | A2DP, AVRCP, HFP, HSP, TMAP, PBP | — |
| Multipoint | ✓★ | — |
| Wired Connector | 3.5mm | 3.5mm |
| Detachable Cable | ✓ | ✓ |
| Cable Length | 1.2000000476837158 m | 1.7999999523162842 m |
| Range | 10 m★ | — |
| Battery | ||
| Battery Life | 30 hrs★ | — |
| Charge Time | 3 hrs★ | — |
| Fast Charging | 3 minutes for 3 hours playback | — |
| Charging | USB-C★ | — |
| Microphone | ||
| Microphone | ✓★ | ✗ |
| Mic Count | 6★ | — |
| NC Mic | ✓★ | — |
| Boom Mic | ✗ | — |
| Detachable Mic | ✗ | — |
| Features | ||
| Voice Assistant | Siri, Google Assistant | — |
| Touch Controls | ✓★ | ✗ |
| App | Sony | Sound Connect | — |
| Gaming Mode | ✓ | ✓ |
| Water Resistance | Waterproof | — |
Pros & Cons
Sony WH-1000XM6
- Strong connectivity (100th percentile)100th %ile
- Strong anc (98th percentile)98th %ile
- Strong sound (91st percentile)91st %ile
- Strong build (91st percentile)91st %ile
- Below average user sentiment (22nd percentile)
Sennheiser HD 660S2 700240
- Strong social proof (90th percentile)90th %ile
- Strong comfort (87th percentile)87th %ile
- Strong sound (85th percentile)85th %ile
- Strong build (76th percentile)
- Below average mic (15th percentile)15th %ile
- Below average anc (32nd percentile)
Pricing
Sony WH-1000XM6 offers 2.5x better value for money
Verdict
Scores 96 overall, wins 7 of 7 usage categories and 17 of 41 specs.
