I am trying to audition the Mission Gemini 2 and the Friedman ASC 12 at the same time. I have setup my Axe-Fx to run in stereo and run a cable out of the balanced XLR's that combines into a stereo TRS that plugs into the Gemini. The Friedman is mono, and needs a one balanced XLR so I was thinking about just using the left balanced XLR into the Friedman. Is there a way to have them both connected at the same time so I can easily audition how they sound rather unplugging everything and going back between each of them?