Hot key for switching output device?

Using Adobe Audition CC on an i-Mac 21.

So I'm checking my mix through my usual interface.  Now I want to quickly check it on another pair of speakers, for example a little pair of powered USB speakers.

My question is this:

Is there anyway to set up a simple hot key to allow me to quickly switch my output from one to another?

Please walk me through it, if possible.  Be very grateful - thanks.