Hey! Not sure if this is still relevant but Overwitch now supports the Analog Heat MKII.
Overwitch is a Linux implementation of the Overbridge protocol used in recent Elektron devices.
You will have to put your Analog Heat into Overbridge mode and you will also need Jack or PipeWire.
Once you start the program your Analog Heat will just show up as a node in your Jack/PipeWire graph with input and output ports.
Here is the project page: https://github.com/dagargo/overwitch
You probably want to build from source because your distribution might have an old version and support for the Analog Heat was added very recently.