Yes, I did allude to that possibility. I was having one of those "everything sounds like crap" moments and the timing of it was shortly after the CXNv2 had a firmware update. I didn't worry too much about it because even if it were the update that was responsible, I was certain it would be quickly followed with another update. Anyway, I am still using them both since that time with no further issues so it was apparently me and not the DAC.
Here is a link to the unit on Amazon:
https://amzn.to/3TVVZgoI have two in our listening room, one at each end. It eliminates the computer and the USB cable. It can use WIFI to run wireless. The unit can be controlled directly with your computer, tablet, or phone. It also has a remote control with volume feature that many of our customers like. And it shows a picture of what is playing on the front panel. We like the way this unit sounds over many more expensive DACs.
I have also found these units on eBay that claim to be refurbished by Cambridge.
-Steve