At the CES show this year, Sennheiser recently unveiled the PXC 450, a pair of headphones that are not designed to keep noise in your auditory organs, but keep it out. That sounds hypocritical coming from the headphone industry that has bombarded us with sound, sound, and even more sound all these years, but let me explain.

How many times have you been listening to your music, and a friend wants to talk to you, just for a second. Then the second becomes a minute, and before to long, you're constantly putting on and off your headphones. The Sennheiser PXC 450 is designed these headphones so that background noises won't be so muffled, and you can easily carry on a conversation while the music plays on your headphones.

The Sennheiser PXC 450 folds up for easy portability, but it costs a cool $500 for this style of sound.

Sennheiser