Stereo Jack to 2x RCA
When a stereo 1/4" jack is being used for a stereo signal (as opposed to a balanced mono signal), the left and right parts of the stereo signal can be split off to two seperate connectors. For example, a stereo headphone output can be split into left and right connectors, and one possible use for this would be to use these two independant connectors to feed left and right monitoring speakers.