d. Top Log in or register to post comments June 0, 0000 - 0:00am #000 May Belt Offline Last seen: 0 years 0 months ago Joined: May 0 0000 - 0:00am Re: Perception >>> "The "audio" part I am referring to would be a tweak or device that directly influences audio equipment or room acoustics, not enhancing the feeling of ease of human beings. Drugs do that too, but I wouldn't call it an audio tweak.