A10X earphones are designed for the ultimate immersive listening experience. At the heart of the headphones is a dynamic low-mass moving coil assembly and beryllium composite diaphragm, delivering a balanced frequency response over ten octaves and extended bass. With superior imaging, separation, and phase coherence, the A10X accurately represents every detail of your music. NOISE ISOLATION POLAR PATTERN Noise isolation is the measure of sound attenuation levels achieved with A10 earphones that have been properly fitted in the ear canals with the supplied silicone ear tips. The noise isolation polar pattern illustrates how attenuation of the A10X earphones varies as a function of both frequency and direction of the