Don't do it unless the vendor's tech expert assures it is OK.
Is it safe
I have a jolida jd502p it has xlr and rca inputs my question is this can I have the rca and xlr input connected at the same time to different sources provided the source is not powered on.The sources would be a PS Audio GCPH with XLR and a MSB LINK DAC III with a Luminous Audio axiom passive pre RCA.