At the Dynamic Ear Company we are working on technologies that allow you to control the sounds you want to hear and those you do not want to. Using acoustic filters or Dynamic Sound Technology, our innovative sound control products let you hear what you want to hear, whilst keeping you protected from unwanted sound. DST (Dynamic Sound Technology) is a mechatronic system built into an ear bud that automatically controls the sound level reaching the ear, this is achieved without processing the sound or causing distortion. DST lets you hear the natural sound as it reaches your ear at your desired level.