RCA MALE TO 2 RCA FEMALE Connector Extension You can easily connect your home and professional audio equipment, such as a subwoofer, with the help of the connectivity Premium 1 RCA male to 2 RCA female Y audio cable adapter. Using this RCA converter, you can combine a stereo source into a mono signal or split a mono source into two streams. Use this connection to link a mono audio source to stereo RCA-equipped devices.