Marantz is not the answer for you this time......
Marantz has a streamer, but they are woefully inadequate on a slick user interface that is easy to learn and use........it's clunky and getting the music into the box or getting the box to see the network isn't user friendly.
I would go with the Auralic Aries Mini @ around $500.00 or so
It is primarily a streamer, has all the wireless capability someone would want and supports Tidal, A MASSIVE REASON FOR DOING THIS....(if you have this device without a Tidal subscription, you need psychiatric care)
If you would rather store your music files on the device itself, just add a solid state harddrive inside the box, or add an external USB drive......you'll of course need your spawn to rip your CDs to files and then fill up your drive....
The biggest reason to go Auralic is they have just the absolute easiest, slickest and most mature iphone/ipad interface out there.......it never crashes, and it's just beautiful.......
I will venture a guess that once you discover the joys of sending Tidal CD quality files to your DAC and having millions of songs to choose from, it will alter your listening habits just as a DVR has altered everyone's watching habits......