Sony mdr z1r high resolution audio premium headphones as part of their new signature series the new sony z1r flagship headphones have been designed to elevate the high resolution sound experience from one you listen to to one you can feel using a newly developed diaphragm with a magnesium dome and a liquid crystal polymer edge the 70mm hd driver enables up to 120khz playback in high resolution audio the result is unparalleled sound purity and precision a special acoustic filter controls the a