Despite the introduction of more advanced audio and video signal cables, such as HDMI and Toslink, most audio and a large number of video connections still use the common RCA connector. The RCA standard is far from gone. This is a single-channel cable with male RCA plugs with molded connector housings and strain relief boots on each end to ensure the cable lasts long. The cable is ideal for short, low-frequency connections, such as standard audio signals. Over the years, they have been used for a large variety of applications so it's common to come across a device that needs to use it.