It's a really common problem. You want to send a signal to two components from one source. Or, you want to combine two outputs into one input.
Our RCA to RCA Y Adapter makes it fast and easy. RCA jacks are single channel. It takes 2 jacks to make stereo, Left and Right.
These Y Adapters have an RCA male plug for each channel at one end, (see the right side of the picture) and two female RCA Jacks at the other end. So just plug your 2 sources or outputs into the female jacks and then plug the single RCA Plug for each channel into your input or output and you're all set.
You get a pair of Y adapters. The pair handles both right and left channels so just buy one pair for each stereo signal you want to combine. That's a quantity of 1 when you click the button.