New Cary DMS 700

Have you ever thought about subscribing to Roon?

I have my best of the best on a 1tb SSD plugged in to the Cary. Other than more storage what would be the advantage of a Nas if I was only accessing from the Cary?

Cool feature
The DMS-700 has expanded the function of the 3 USB-A and SD Card Slot inputs to be accessible from a networked computer. This means when the DMS is powered on, any storage connected to the DMS will act as a NAS Drive (Network Attached Storage). This allows you to copy your music file directly onto the USB or SD Card from a network computer without needing to disconnect them. This simply turns any USB drive or SD Card connected to the DMS into a NAS drive. Playback from these drives can be direct (computer-less) or monitored and controlled from a computer-based server i.e., JRiver, Twonky, etc., or even via Roon. What’s more, if you have more than one DMS you can play files from one DMS to another

I have a Cary DMS-600 and I can connect fine to my Synology NAS.  Have you tried turning on the Media Server in your NAS?  The Cary can find the media server without logging in.  What's more, it doesn't have to index all the metadata again.  I did just try using the PC share only and I can access it while logging in as well.  I just put in the IP address of the NAS.  Logging in fine with a non admin account.

So on the 700 you can combine playlist from Qobuz , Tidal,USB, Network etc ?
that’s huge.