The ability to block out multiple frequency sounds is an increasingly popular feature of high quality headphones that professionals and recreational music enthusiasts alike are willing to pay more to get.
Noise cancelling headphones
Though more expensive than regular headphones, noise cancelling ones are indispensable when you travel often or are in public places. The reason is simple: noise canceling headphones block out outside noise (like the engine of an airplane), while keeping music in; this way, your favorite music will not burst out of your headphones to bother others, and only you will be able to listen to it, and hear the instruments playing, and the voices of singers or actors as if you were there.
Canceling or isolating noise?
Sound quality can also depend on whether you listen to your music indoors or outdoors; if you use the headphones more when you are indoors, a pair that isolates sound rather than cancel it might be better. Therefore, the sound that you hear will be of exceptional quality when you use noise isolating headphones.
A comfortable fit is essential, especially if you are going to have them on for longer time periods, so look for headphones that come with an adjustable headband for a customizable fit, and that allow your ears to breathe even if you must wear them for many hours a day. And perhaps more importantly, headphones that fit snuggly over your ears will enhance their noise cancelling properties to a maximum. Besides, these headphones can act as ear plugs, as well.
Cheap versus expensive
There are more affordable models that claim to keep out unwanted noises, and some actually do. Remember that a quality set of headphones is also able to render great sound, with both highs and lows exceptionally clear, not one or the other. Professional musicians, producers, and other people whose job requires the highest level of noise blocking, should purchase their headphones from reputable brands that have been in the industry for many years; otherwise, if you simply enjoy listening to music in your spare time, you may be better off with a standard set that ensures good sound quality and cancels out most noises.
If you buy your headphones from a brick and mortar shop, you can easily perform a quality sound check to determine what kind of headphones you need. Some models feature a button that you should press when you wish to cancel out noise and listen to your music at the same time. However, switching on the button can sometimes result in parts of the song being negatively affected, such as the volume decreasing and increasing. To avoid this inconvenience, it is advisable to read as many user reviews as you can, and browsing websites like Headphones Unlimited can also give you an idea of the best headphones available.