Open, supra-aural headphones with NoiseGard technology
Reduces ambient noise by up to 10 dB
Improves audio quality in noisy environments
Compatible with nearly any portable or home system with included adapters
Requires 2 AA batteries to power noise reduction
The HDC 451 NoiseGard mobile set are open stereo headphones with active noise compensation for mobile applications. Powered by two AA batteries, these headphones reduce ambient noise by up to 10 decibels. This functionality protects hearing and reduces stress. The headphones terminate in a standard 0.125-inch miniplug for portable audio systems, plus a 0.25-inch adapter is provided for connecting to home stereo systems and a 2x-mono adapter for airline audio and some other devices.
This review is from: Sennheiser HDC451 Noise Cancellation Supra-Aural Headphones
These Sennheiser HDC 451 noise suppression headphones are absolutely wonderful. I wear them everywhere -- indoors or out -- even when I'm not listening to music. Nothing I've owned has improved my quality of life more.These Sennheiser headphones eliminate redundant noise -- high or low, up to 20 db -- but leave other sounds undisturbed. Indoors, this means an abatement of unwanted utterings from dishwashers, air-conditioners, or other appliances; even people talking -- or the TV playing -- in other rooms. Outdoors, this translates into a reduction in noise from lawnmowers, leaf blowers, cars driving by, or planes flying overhead; even the sounds of kids playing or dogs barking emanating from down the street.On planes, the Sennheisers significantly reduce the rumble from engines -- and the incessant hissing from personal air vents overhead. And let's not forget sleeping -- which is now, for once, truly feasible.With noises canceled out, my CD's (or DVD's) sound appreciably better -- particularly in the highs which are definitely much clearer.As the ultimate benefit, the open-air design of these Sennheisers allows me to use them everywhere, indoors or out; something not possible with a more encompassing closed-ear style (such as those from Bose which are significantly more expensive). I've used these headphones, for example, when visiting amusement parks, or when attending indoor or outdoor sporting events -- all of which were made surprisingly more enjoyable (and much more pleasant) by eliminating unwanted noise. I've even found that, while wearing these headphones, I can still carry on a normal conversation -- or listen to music or the television -- when the sound's source (person or machine) is located in the room with me or nearby.The Sennheiser's earpieces are covered with a durable cloth (not foam); and they swivel on universal joints to insure a comfortable fit.These remarkable headphones have but one shortcoming. They surprisingly tend to amplify wind noise, making them unusable on windy days or outdoors when riding about on a bike or horse.Can a set of noise canceling headphones make music sound better -- while simultaneously improving one's quality of life? You bet!If you're in the market -- these Sennheiser HDC 451's are definitely the one's to get....
This review is from: Sennheiser HDC451 Noise Cancellation Supra-Aural Headphones
This is meant to be a lightweight headphone set which can make travelling with them a little easier and travelling itself more comfortable. It reduces external noise, but one should note carefully that 10dB is NOT all that much. Is it an improvement? Yes. Does it completely block external sound? No, not by any means. In fact, the best way I can describe it, it's the equivalent of taking a thick towel and wrapping it once around your ears. You will still hear outside noise, but it's muffled. I bought this for airplane use, as I travel frequently, but can't yet say how effective they are in blocking that horrible engine droning. I'd imagine they'll help, but not too much. They come with a handy airplane headphone converter jack as well (plug it into the armrest). As far as sound reproduction, I'd advise these headphones if you have a programmable/custom equalizer function on your CD/MP3 player (I use these with my portable, which adequately powers them). Otherwise, you're likely to find the bass rather weak and the treble not quite bright enough. The midrange is, however, superb. With an equalizer you can easily correct this. The headphones are also extremely comfortable, and because the noise reduction feature operates on its own set of AA batteries, you can use it even without turning on your CD player. The bottom line is that these headphones are good but a little pricey: if you need to buy one set of good headphones, look elsewhere. If you can afford the luxury of a lightweight pair and still reserve a sturdier one for home use, by all means check these out. Lastly, if total noise reduction is what you seek, check out non-open-air headphones. Keep in mind that such headphones can leave you very much in your own little world, sometimes even if you'd rather not be!...
This review is from: Sennheiser HDC451 Noise Cancellation Supra-Aural Headphones
I've owned these headphones for 3 hours and LOVE them. I just walked 8 blocks through Manhattan to the subway, took 3 different trains, and not only did it cut ambient noise considerably but it made the subway announcements easier to hear! Here are my pro's:Open-air design with CLOTH covers--very comfy. Cupped headphones make my ears sweat and ear-buds hurt after a while. I hardly felt these at all. Fairly lightweight. I don't think they are heavier than my fully cupped headphones, but less bulky.Noise cancellation seems to rival that of the VERY expensive Bose headphones, but at a fourth of the price. They cut repetative and bass noise very well, and dim the higher pitch din too. I took them off at one point to discover jack-hammering going on not too far away, but couldn't hear it at all with them on.I took an entire subway ride with my CD playing at volume I usually only use indoors. For the first time I didn't have to blast my ears off to hear the music.Cons:don't get your finger too close to the headphone side--there is a mic there and you'll get feedback.the control could have a volume setting on it.It would be nice if you could use this behind-the-head.Overall: for $[$$] this was a fabulous buy....
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