Sound mini-4 vs 4pro, and Amazon streaming

[Thomas _2748]

Hello, as far as I can see, the mini-4 differs from the Pro version only in its headphone output and power consumption. Probably also a larger power supply. My question, are the two identical in terms of sound? Especially the three-dimensional representation of the sound stage.
2 Question. I don't see that you guys support Amazon Music. Is that correct?
Greetings