In your shoes with your budget I think you would be best off with a stand alone streamer with it's own built in DAC. Something like a Bluesound Node would fit right into your budget. Its user interface is both robust and intuitive, and supports a wide variety of streaming sources including Amazon HD. It would also provide you with a nice upgrade path should you choose to add a stand alone DAC down the road. Just my 2 cents. The Wiim products would also be worthy of consideration at a somewhat lower price point. For many of us products like these were the gateway to streaming.
Digital Advice
Looking to replace my Denon 2900 which is very old and having more problems.
Option #1DAC and Mac (I already own)
Option #2 Stand-alone Streamer DAC
For digital I play CD’s to the 2900.
Many but not all my CDs have been ripped to the Mac.
Goal is to stream music to HIFI system & play legacy CDs.
I stream Amazon Music HD, on my Mac and mobile devices.
My budget is $600.