I use several different headphones, and plugging them in jacks over a period of time is bad. You'll break the pc input, the headphones themselves, or maybe even the wires.This reduces that with a press of a button.Perfect for workstations, or other situations where you'll be changing inputs throughout the day.Another interesting note is that you can double these up on each other. Stacking one media hub into the other and you get multiple buttons for different variations of inputs and sources. Not something everyone would need. But it works.