Universal audio/video connecting lead. Use singularly for mono audio and video sources or combine two leads for a stereo signal
Use with video equipment for image signal only or combined with a RCA/Phono pair for image and audio
May also be used with a S/PDIF interface usually found on digital audio equipment such as a DAT machine
Or audio processing devices ( this allows the transfer of audio from one file to another without the conversion to and from an analogue format, which could degrade the signal quality)