@moose89
Hi
I've had the N130 for about 10 months with my CDT plugged in to analogue/digital input with no issues. If I play a CD, the Node auto-plays from the CDT and overrides the streaming signal. No issues at all.
It seems odd this has happened to you multiple times; my initial thoughts reading yor issue is it maybe a problem with your source component or interconnect used, but I'm sure you would have already thought of this.
Did you receive confirmation there was a definite fault when you returned your previous Node's?