Digital optical audio cables transfer the audio signal between 2 devices. E.g. between a PS3 and an amplifier. The optical cable works with all devices that have optical outputs and inputs and use the SPDIF/TOSlink connector. If one of your devices has a smaller 3.5mm optical port, you may wish to purchase an adapter, please search our shop or feel free to get in touch. Our digital optical audio cables are available in many different lengths.