Pros: Properly merges two RCA type connections to one stereo 3.5mm plug
Cons: The left and right sides aren't marked on the RCA side so it's a 50/50 shot on whether or not you get it right the first time when setting up. I figured it out and marked it. Recommend Monoprice put SOMEthing on these to mark at LEAST one of the sides.
Very good, simple device that needs some proper marking.