I have a set of these designed for musicians, theres an open channel through them, and you put a special "button" at te outward end, that lowers volume without affecting sound quality. I think the company is called "Etymotic Research"
I have a set of these designed for musicians, theres an open channel through them, and you put a special "button" at te outward end, that lowers volume without affecting sound quality. I think the company is called "Etymotic Research"