Sennheiser HD 660S2 700240
Nothing Headphone Pro B175
What Buyers Say
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
Nothing Headphone Pro B175
The CMF by Nothing headphones are widely praised for their exceptional value at around $80, offering premium build quality, comfortable fit, and impressive sound with deep bass and clear mids/highs. Active noise cancellation is effective for the price, though not top-tier, and battery life is excellent. Minor drawbacks include a soft carrying pouch instead of a hard case, a slightly bulky design, and a volume scroll wheel that adjusts in 6% increments. Overall, users strongly recommend them as a budget-friendly alternative to high-end models like Sony XM4/XM5.
Pros
- Exceptional value for money
- Premium build quality and design
- Comfortable for long wear
- Deep, punchy bass with clear mids/highs
- Effective ANC for the price
Cons
- Soft carrying pouch instead of hard case
- Slightly bulky design
- Volume wheel adjusts in 6% increments
- ANC not top-tier
- Cushioning may lose shape over time
Scores
Specifications
| Sennheiser HD 660S2 700240 | Nothing Headphone Pro B175 | |
|---|---|---|
| Design | ||
| Form Factor | over-ear | over-ear |
| Open/Closed | open | closed |
| Foldable | ✓★ | ✗ |
| Weight | 0.26 kg★ | 0.28 kg |
| Ear Cushion | velour | memory foam |
| Headband | Aluminio | cap-friendly |
| Audio | ||
| Driver Type | dynamic | dynamic |
| Driver Size | 42 mm★ | 40 mm |
| Freq Min | 8 Hz★ | — |
| Freq Max | 42 kHz★ | — |
| Impedance | 300 Ω | — |
| Sensitivity | 104 dB★ | — |
| Hi-Res Audio | ✗ | ✓★ |
| Codecs | Sennheiser HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black (Renewed) | LDAC |
| Surround | 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 | Spatial Audio |
| Noise Control | ||
| ANC | ✗ | ✓★ |
| ANC Type | — | Adaptive |
| Transparency | ✗ | ✓★ |
| Connectivity | ||
| Wireless | ✗ | ✓★ |
| Bluetooth | — | 5.4★ |
| Multipoint | — | ✓★ |
| Wired Connector | 3.5mm | 3.5mm |
| Detachable Cable | ✓★ | — |
| Cable Length | 1.7999999523162842 m | — |
| Battery | ||
| Battery Life | — | 50 hrs★ |
| Fast Charging | — | 5 mins for up to 4 hrs of playtime |
| Charging | — | USB-C★ |
| Microphone | ||
| Microphone | ✗ | ✓★ |
| Mic Count | — | 3★ |
| NC Mic | — | ✓★ |
| Boom Mic | — | ✗ |
| Features | ||
| Voice Assistant | — | Google Fast Pair & Microsoft Swift Pair |
| Touch Controls | ✗ | — |
| App | — | Nothing X |
| Gaming Mode | ✓★ | — |
Pros & Cons
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)
Nothing Headphone Pro B175
- Strong anc (98th percentile)98th %ile
- Strong connectivity (94th percentile)94th %ile
- Strong sound (94th percentile)94th %ile
- Strong social proof (90th percentile)90th %ile
- Below average build (34th percentile)
Pricing
Nothing Headphone Pro B175 offers 6.0x better value for money
Verdict
Scores 84 overall, wins 5 of 7 usage categories and 11 of 35 specs.
