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alaTest.com
Editors' rating: 77
Summary: alaTest has collected and analyzed 85 reviews of Sony MDR-NC40 from international magazines and websites. Experts rate this product 55/100 and users 77/100. Comparing these reviews to 131772 other Headphones reviews gives this product an overall alaScore™ 77/100 = Good.
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pcmag.com
Editors' rating: 70
Summary: Though not as effective in eliminating ambient noise as more expensive sets from Bose and Sennheiser, the MDR-NC40 delivers quality audio performance and noise cancellation that's impressive considering its $100 price tag.
CNET editors' buying advice
We have not reviewed this product but here is CNET's buying advice on Headphones. This content was chosen based on the features included with this model of headphone.
Headphones and your Personal Health
Headphones are a cultural norm - no matter where you are, people utilizing them while exercising, commuting, studying or working.
Advances in technology have increased battery life and storage capacity resulting in users listening with headphones at loud decibels for prolonged periods of time. Headphone users' listening habits have audiologists alarmed. Younger people are exhibiting hearing loss normally found in older adults.
Prevention is essential to protecting your hearing. Below are five tips that can potentially reduce hearing loss:
- Decrease the volume.
- Utilize the volume limiter on your portable device (if applicable).
- Take five - give your ears a time out frequently.
- Never use your headphones to drown out background noise such as subway or city traffic.
- Invest in sound-isolating or noise-canceling headphones.
For additional information on headphones, please see CNET's Headphones Buying Guide
See more Headphones products
Noise-canceling headphones
Active noise-canceling headphones don't eliminate noise entirely; rather,they hush ambient noise by creating antinoise that obviates the noise at your ear. The better models significantly reduce the whoosh of jet planes' air conditioning systems, but are somewhat less effective at quieting the background din on trains and buses. Since you no longer have to crank up the volume to overcome background noise, you can listen at lower levels, which leads to reduced ear fatigue—a definite plus. You'll also hear more low-level detail in your music. However, some users may be sensitive to the antinoise, which exerts pressure on your eardrums. Most folks won't notice it, but we recommend auditioning noise-canceling headphones before you buy. Noise-canceling headphones comes in all form factors, from full size to earbuds, but no matter the style, they always use batteries to power the circuitry, which may be stored in the ear cup of larger headphones or in a separate in-line module on smaller models.
For additional information on headphones, please see CNET's Headphones Buying Guide
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Ear-pad headphones
Ear pad or on-ear headphones rest on your outer ears and run the gamut from inexpensive portables to high-end home models. Some, but not all models fold-up for easy transport. While ear-pad headphones can have closed designs that cover the ears, they are never fully sealed as are full-size circumaural models. As a result, they're generally very comfortable and less prone to overheating ears than full-size headphones. However, they are also less effective at noise isolation than in-ear or full-size models, and offer less powerful bass compared with full-size headphones.
For additional information on headphones, please see CNET's Headphones Buying Guide
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