Sound via laptop vs phone vs tablet

@crwindy  let us know if that app helps you. I take Digital  from my iPhone and iPad by running  lightening out through apple camera conversion USB adapter and then  through a powered hub. Does not sound bad, but have not compared it to a PC source. 

OK, my misunderstanding. And that should indeed all produce the same datastream, and bits are bits, so there cannot be any difference (are you not imagining things - the audiophile curse?). Unless of course the datastream is somehow compromised by the settings in the devices. Jitter really has to be absolutely awful to be audible.

USB Audio Player Pro does not support Spotify. I just use the computer.