Featuring titanium construction for durability, light weight, and portability Audio-Technica's ATH-CK7 QuietPoint passive noise-reducing earphones deliver outstanding isolation from distracting background noise. Without the use of active noise-cancelling electronics, these in-ear models achieve significant attenuation of outside sound, allowing for increased fidelity and acoustic impact at lower volume levels. Ideal for use with all audio sources, including MP3 and other portable players, they come equipped with interchangeable ear pieces for a comfortable, custom fit.