To use this cable simply connect one end to your audio source device, like a smartphone, then connect the other end to an audio receiver, like a home theater system.
This cable supports analog stereo audio.
This cable is bi-directional. Both ends can be connected to either an audio source, or an audio receiver.
This cable is only compatible with 3.5mm stereo audio ports. It can be converted to analog stereo RCA using a passive adapter, or to analog mono RCA or analog mono 3.5mm. This cable is not compatible with Mini TOSLINK ports, and can not be converted to TOSLINK or coaxial S/PDIF without an active, powered converter.