External Preamp question


I want to use external preamp which has XLR and RS connections.

But on the interface there are combo jacks with XLR-mic signals only, TRS/RS line level or instrument signals (according to manual).

Is it safe using XLR and going to mic input again or can I damage something doing it this way?

It sounds ok and the levels look more healthy. I find myself using more gain on the interface when using unbalanced RS connection.

I know it’s more hardware related question, but any tips or opinions are welcome.