For more than 50 years, the name Sennheiser has stood for top-quality products and tailor-made solutions in all areas of sound recording, transmission and reproduction. Microphones and headphones of every kind, RF transmission equipment ranging from vocals microphones to complete systems for musicals, conference and visitor guidance systems, products for the hearing impaired and headsets for aviation - Sennheiser products have become firmly established at the pinnacle of audio technology throughout the world.

The medium-sized company is managed by its owners and employs about 1500 people throughout the world from its headquarters in Wedemark near Hanover, Germany. Sennheiser has a total of four production sites in Germany, Ireland and the USA.

Its worldwide network of sales subsidiaries and long-term sales partners established over many years ensure that the company remains close to its customers and always has its finger on the pulse of the market. A large research and development department in Germany and an R&D office in California guarantee that the company maintains the technical lead that it has always enjoyed. A large number of patents and awards, including an Oscar, an Emmy, a Grammy and two German Industry Innovation Awards, are evidence of Sennheiser's innovative power.

With the ever more expanding MP3 market, consumers want to hear the very best out of their players and a number of manufactures have designed a whole range of different types of headphones you can buy to get the most out of our devices .Sennheiser have designed a new High-quality ear-canal based series of headphones called the CX series that have bass driven integrated sound.

In this review I will be taking a look at two sets of headsets from the CX series, the CX 300 Pink and the CX 300-II Precision Black. Sennheiser has announced their support for breast cancer research with the launch of a bubblegum-pink version of their CX 300 ear-canal headphone. They will help fund the breast cancer research with 10 percent of the price being donated to the Susan G. Koman for the Cure charity.

So let’s see what the one of my personally highest rated headset manufactures in electro-acoustics experts have put together in these two similar set of headphones.

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