There are lots of different studio controllers such as Midi controllers (Musical Instrument Digital Interface) that use a music-technology digital language to access and control your software.
There are also other controllers for example; controllers used for switching between multiple speakers, such as turning subwoofers on and off regardless of which monitor set you're actively using. As well as this; studio controllers can also let you operate virtual instruments (VST's) on your computer, control your DAW, create beats and much more!
