@itzhak1969 "
The Ayre CX-7 has also 2 xlr and unbalanced analog outputs,You should try them and see if the sound is better than the digital xlr you should use it instead"
Preamp is rca only, so if I wanted to try the xlr from the Ayre , would have to get the adapters.....and not sure if would make a difference ? could try I guess.