Sennheiser Cx 175 Street Line Headphones (Black) Ear-canal In-ear Headphones Special Gift for Good One Fast Shipping Ship Worldwide (Discontinued by Manufacturer) Powerful Bass-Driven Sound High powered dynamic speaker systems for an outstanding audio performance Ear adapters in different sizes for excellent ear canal fit and ambient noise attenuation Clad in an attractive appearance, the CX 175 ear canal phones are no less than charming. Offering an outstanding audio performance, thanks to their high powered dynamic speaker systems, they also include various ear adapter sets for excellent fit and ambient noise attenuation.