Most often used in audio, in order to either split (line-Y) or combine (mic-Y) signals. May also refer to a lighting two-fer, particularly a molded one ("Y"-style) as opposed to a "V"-style.
Most often used in audio, in order to either split (line-Y) or combine (mic-Y) signals. May also refer to a lighting two-fer, particularly a molded one ("Y"-style) as opposed to a "V"-style.