This is a single channel analogue audio cable, 1M, from the great maker AudioQuest. About 20 years old and either top of the line then or close.
Believe it has not been used and was separated from it's companion cable due to the 7 channel system we were using the cables for.
Ideal for a surround system where a single cable is needed or a sub. Very dynamic and detailed. Still a stunningly revealing cable.