Best way to send digital to DAC


With a DAC I have no interface or file management.  What is the best sounding way to send and control music into the USB Class 2 for High Res without using a computer direct?

Can I use a Synology with great sound or is there something I can control files with but the files are on the device hard wired to the DAC?

It's an Aesthetix DAC
128x128audiobunker
Auralic Aries or Aries Mini comes with pretty good iOS software interface and will connect to hard drives directly. You will need an iPhone.
Another route would be an Ethernet renderer from Sonore. I use their microRendu in DLNA output mode with either BubbleUPnP or mconnect for control (both support Qobuz and Tidal). Simple. There are other output options as well (RoonReady, HQPlayer NAA, ShairPort, etc.). You can locate your NAS anywhere on your network thus removing it from your listening room entirely. In my experience the sound quality and functional stability is better than either my Mac mini or Bluesound Node 2. Best of luck in your search.
I have the Wyred4Sound server with 2TB SSD storage. The connection is I2S via HDMI cable.