how many db of sound do they reduce?
1491449
According to the manual the Active Noise Attenuation is &gt;_ 18db at 150Hz-400Hz. The Sensitivity is 112db +_ 3db a 1 KHz. I am quite pleased with the headphones. They are high quality at a good price. Herb
1491450
active noise attenuation = 18db @ 150 hz. sensitivity 112 db @ 3db. driver unit = 40mm.If your thinking of buying these get them. I bought 3 sets. 1 for @ home, 1 for @ work, & a spare just in case. I have bought many noise canselling & amp. headphonews, NOTHING ever came close to these...BEST head phones on the market..
1945933
+/-12dB, tunable from 32 to 16K Hz with an advanced equalizer, modifiable surround sound (have to get the software off the web; easier said than done). Hope that answered your question
2215842
I think these are better than average at not leaking sound at reasonable volume levels. However, I would turn your music down when you take these off. They sound like little speakers when they are not pressed to your head.
1146362
I really don't know but don't see why they wouldn't significantly reduce the noise. I have to tell you I love mine but the wire is so cheaply made I don't use them very often. I use Koss Studio Headphones that are Bulletproof but very heavy. Good luck!
573196
I agree totally with Karen. You don't lose quality of sound, but you do lose a lot of volume.
1641784
I don't know the noise reduction is, just that they work really well for me but then I wear hearing aids and these are the best ones I've tried.
730128
The other people who answered obviously know nothing about the product. It says on the Sennheiser website they have "up to 26 dB noise suppression". (http://en-us.sennheiser.com/earphones-high-end-hifi-stereo-passive-noise-reduction-ie-80)They have very, very good noise reduction. I can hardly hear anything other than whatever music I'm listening to or whatever game I'm playing with these in.
2203888
Yes, but less than traditional ear plugs do. I noticed that some of the mid-range sounds are muffled or gone. Most of the sounds are like the volume got turned down but otherwise sounds the same. I go to a lot of live shows and have suffered some hearing loss as a result. I get better sound quality with these than regular ear plugs but no ringing in the ears after the show. If you want perfect/near perfect sound quality with less volume your only other choice is pro quality fitted electronic noise reduction systems but they start at about $300. For me this was a good compromise. Hope this helps. Yes, but less than traditional ear plugs do. I noticed that some of the mid-range sounds are muffled or gone. Most of the sounds are like the volume got turned down but otherwise sounds the same. I go to a lot of live shows and have suffered some hearing loss as a result. I get better sound quality with these than regular ear plugs but no ringing in the ears after the show. If you want perfect/near perfect sound quality with less volume your only other choice is pro quality fitted electronic noise reduction systems but they start at about $300. For me this was a good compromise. Hope this... » Read More Yes, but less than traditional ear plugs do. I noticed that some of the mid-range sounds are muffled or gone. Most of the sounds are like the volume got turned down but otherwise sounds the same. I go to a lot of live shows and have suffered some hearing loss as a result. I get better sound quality with these than regular ear plugs but no ringing in the ears after the show. If you want perfect/near perfect sound quality with less volume your only other choice is pro quality fitted electronic noise reduction systems but they start at about $300. For me this was a good compromise. Hope this helps. « Show Less
1149265
They are designed to be at ear level. If you set them on the floor they will sound quieter.
1538516
Almost none!! Maybe a 15% reduction. So, don't buy them for any noise reduction. They are worthless!!
1689175
The noise reduction works fairly well, I'd say you hear 50% less noise if you put them on.
597575
They sound great at medium volume, but will distort at full volumn, 250 watts
393151
NO! They cut down on ambient noise but a loud item such as a chain saw or lawn mower is out of the question!If I pay attention I can hear what my wife is trying to tell me, while I have them on
734258
Hey Theresa. These won't do anything to reduce noise. I'd advise you look for something else.
420853
Yes in fact if there is too much bass for you Bose has a way to tone it down (see manual).
1125206
It reduces the ambient noise without increasing the volume. They work great!
393150
NO! They cut down on ambient noise but a loud item such as a chain saw or lawn mower is out of the question! If I pay attention I can hear what my wife is trying to tell me, while I have them on