This is the ¼ inch stereo male to dual ¼ inch mono female adapter. It features a ¼ inch stereo male connector on one side. And two ¼ inch mono female 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 stereo signal and split it into a left and right mono signal. The adapter is great for connecting a variety of music equipment into a sound board or mixer. The ¼ inch stereo male to dual ¼ inch mono female 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.