This is the ¼ inch mono female to dual RCA male adapter. It features a ¼ inch mono female connector on one side. And two RCA male connectors on the other side. Let’s take a brief moment to look at some audio connectors that can be hard to identify. There are 3 styles that look very similar. 2.5mm, 3.5mm, and ¼ inch. 2.5mm is the smallest and the least common. It is typically found on older android phones and GPS equipment. 3.5mm is slightly larger than 2.5mm and is the most common for day to day use. It is found on many smartphones, tablets, laptops, and computers. ¼ inch is noticeably larger and is also quite common. It is typically found on higher end headphones and music equipment. The adapter will allow you to take a mono signal and split it into two mono signals. The adapter is great for connecting a variety of music equipment into a sound board or mixer. The ¼ inch mono female to dual RCA male adapter is a quick and easy solution for your audio projects. For more information on our products, you can give our customer service department a call at 888-519-9505. For all your cable and connector needs, choose Show Me Cables.