Every streamer review I’ve seen where the reviewer has changed from some kind of Mac had the reviewer raving about the improvement. I don’t understand why, but just saying....
I have used many streamers, and I’m happy with my Auralic Aries G1. It can output USB, SPDIF, or AES3 into a DAC. (If you want to spend more, there’s the Auralic Aries G2.1 and many other options.) It’s built like a tank and among other services, it does support Amazon and Qobuz (I use and recommend Qobuz).
It will even let you hook up a USB optical disc reader and play CDs using the Auralic's buffering and reclocking. That sounds really good to me and better than the $1000+ transport I was using.
(@cosmic_charlie : Auralic added Amazon support some time in the last year or so.)