A signal splitter or signal combiner makes it possible to split a signal and send it out via several ports or to combine multiple signals and send it out via one port. A popular example of one of these handy widgets is a headphone amplifier, which can take a single stereo audio signal and send the same stereo signal out via a whole row of headphone sockets.
Audio Signal Splitters for Microphones or Other Audio Sources
Signal splitters are often used to solve one specific problem. Maybe you're looking for something you can use to switch a line output between two sources, or maybe you have a single microphone signal and need to route it to a mixer and a PA system at the same time. Besides splitters fitted with XLR, RCA or jack ports, you can get signal splitters, combiners and extenders fitted with other output types, like Ethernet ports.