These ear pads sport a very large round opening for the ear. Designed for our VOCE Electrostatic headphone, the pads are also compatible with all ETHER headphone models. The electrostat ear pads may potentially be used with headphones from other vendors, but please note that we make no representations these ear pads will fit any headphone besides our own. Changing ear pads is a fun, easy and reversible way to modify the sound and feel of your headphone. For ETHER and ETHER Flow owners (the pad is not compatible with ETHER 2) the pads generally creates a large soundstage, with a slightly darker midrange. Because the ear hole is so large, it's also possible to change the tone of the headphone by repositioning the position of the headphone relative to the ear. In general, we find that the ear pads produce a brighter sound when the headphone is moved toward the back of the head, while more forward positions darken the mids.