Here's a tip for everyone playing with headphones, particularly in these days when we all spend so much time at home.
The "space" effect partly solves the problem that the Kemper (like any direct-to-headphone amp) sounds a bit lifeless with headphones. But I have a better ALTERNATIVE method.
The aim is to get the left and right channel sound slightly different to each other. I use the Dual Delay just before the final reverb. Settings: Mix 100%/100%, Delay 1 time 11 ms, Delay 2 time 22 ms, Feedback 0%,, Stereo 100%, all other at zero (except Lo Cut at 20Hz and Hi Cut at 30000Hz which in reality means no cut). Try it!