Boss RC-3 to Kemper effect loop

  • Hi

    I try to connect my Boss RC 3 looper to Kemper stereo loop and would like to use also Headphones. What are the settings in kemper ? When the aux in is connected to headphones and I try to use effect stomp X, I got message Effect loop not possible, Aux niput is used ? I would not like to use looper before kemper because by that way all recorded sounds will be changed according to amp simulation you are going to use. Any detailed instructions for the settings ?