Is Spotify as good of quality as the HD-Tracks?

I am interested in Spotify Premium but I am wondering about the audio quality. I have purchased many Hi- res albums from HD Tracks and I play them through Amarra on my mini Mac, Yulong amp, Schitt Bifrost Dac set up and the combo sounds great. Can you tell me if Spotify is as good or?

Would there be any way to play the Spotify tracks through Amarra? Also if Spotify isn't as good of quality as the HD-tracks, would it help to upgrade the DAC? I am very interested in having unlimited music but I want to have it sound great! Any comments are appreciated.. Thanks for your help!