I have main outs , mon out, Direct output, and SPDIF all hooked up to my Apollo and they are configured as follow
|Main outs||Mon Out||Direct Output||SPDIF|
|Master Stereo||Master Mono||Guitar Analog||Guitar Studio|
I get signal on all but main outs, however it seems that I only "hear" the direct out i.e. as hooked up to my Apollo, regardless of what Rig I'm on.
I can confirm that if I connect directly to the headphone jacks on the Kemper that I do hear the various rigs as I browse