Hello Holger,
My name is Pedro and I am a technical support technician for Focusrite. I have looked over your inquiry and I have a solution that will allow you to record your Kronos and your DAW. To accomplish this, you will want to refer to the image attached:
In Focusrite Control, the first thing you will want to do is create 4 hardware inputs. Analogue Inputs 1 and 2 will receive the signal from your Kronos and Analogue Inputs 3 & 4 will receive signal from your DAW.
Please note, you will want to create a track in your DAW that sends the DAW output to outputs 3 &4. You want to leave DAW outputs 1&2 as they are so that you can monitor the Kronos and DAW signal after it has been recorded.
Next, in Focusrite Control, you will want to add Software (DAW) Playback 3 & 4. These tracks will detect outputs 3 & 4 from your DAW.
Following this step, the next thing you will want to do is route Playback 3 & 4 to line outputs 3 & 4. Please refer to image.
The last step will be to connect your Kronos to inputs 1 & 2 and make the physical connections from line outputs 3 & 4 to line inputs 3 & 4. You are now ready to record your Kronos and your DAW at the same time.
For further clarification, please feel free to reach out to us at Focusrite.com.
- Pedro