My experience with Amazon is that their fanciest version is only slighly less than actual CD. You have to listen hard to hear it. Not enough to spoil your enjoyment of the music. Since it's free with "Prime," I consider it a great service!
BIG difference Tidal vs Amazon Music
I read an interesting article on Van Halen‘s Blood and Fire was done with a stereo guitar and I wanted to check it out. So I look for the song on both Tidal and Amazon music and OMG what a difference in sound quality between the two. What gives? Both say CD quality but there’s NO COMPARISON!