Sony announced three new headphones this morning. The MDR-NC300D, MDR-NC33, and MDR-N600D. The Sony MDR-NC300D is a noise canceling in ears headphone with three different modes for Noise Canceling. There’s General Mode and Movie, Airplane Mode and Train, Bus, Car, Office. It is capable of suppressing up to 98.4% of the undesired noises around you.
The Sony MDR-NC33 is capable of suppressing up to 90% of noises. The Sony MDR-N600D is an “over-head” pair of headphones capable of canceling 99% of noises.