Yes somewhat similar.
I have bel canto amplification in both my systems currently c5i and ref1000m with arc preamp and mhdt dac.
I have prime music on the fire tv that connects to the c5i. Have not used it nearly as much as plex to play my own music ripped at cd resolution which seems to be much better sounding in general. Prime music is a nice bonus to get access to music that you would not have otherwise though. I also have squeezebox touch on the same system into c5i. And both sources at their best (fire TV and touch) are comparable in regards to sound quality ie fairly top notch.
I have bel canto amplification in both my systems currently c5i and ref1000m with arc preamp and mhdt dac.
I have prime music on the fire tv that connects to the c5i. Have not used it nearly as much as plex to play my own music ripped at cd resolution which seems to be much better sounding in general. Prime music is a nice bonus to get access to music that you would not have otherwise though. I also have squeezebox touch on the same system into c5i. And both sources at their best (fire TV and touch) are comparable in regards to sound quality ie fairly top notch.