Take a Rig without Cab - Looper Sound changed ?

    Hi Kemperfans,I have on the Looper (Position Post) recorded a riff with Tele and Clean Rig. Now I have run the looper and the clean rigs switched through to make the volume balance. Here I found the problem. Once I turn on a rig without Cab (for my acoustic guitar I use mostly the EQ - without Amp without Cab), the sound of Looper riffs significantly (very thin and terribly) changes. For rigs with active Cab I have seen no changes in the sound Looper riffs.Question: Should there be here a bug in the firmware Kemper or misconfiguration. Perhaps you can try that.Greetings Micha