CXC 700

First previewed at the Consumer Electronics Show earlier this year, Sennheiser's high-end CXC 700 ear-canal noise-cancelling headphones are now available.

The CXC 700 features Sennheiser's unique NoiseGard /digital system, which includes not one, but three noise-cancelling modes:

• Mode 1 is for use on low-frequency noise (100 to 400 Hertz), such as engine noise from trains, buses or small passenger planes.
• Mode 2 is for medium frequency range (400 to 3,000 Hertz), caused mostly by air-conditioning systems in large passenger aircraft or office buildings.
• Mode 3 has a wide frequency range (100 to 3,000 Hertz), and combines the noise-cancelling effect in the medium and low-frequency ranges. Because of this, background noise experienced in airports, railway stations or underground stations can be suppressed, but with slightly lower noise-cancelling performance than the first two modes.