There is a world of difference between hearing the sound from your computer on your computer speakers & hearing it amplified through your stereo system. This cable means that you can connect the output on your sound card or DVD card to a hi-fi amplifier, e.g. to the AUX, TAPE or VIDEO input on the amplifier. Never use the PHONO (record player) input! Male jack at one end & two male phono jacks at the other.