Spotify Premium offers better audio quality for users rather than free Spotify users. But please be not sad, you can use Spotify DRM Removal Tool for Mac to get Spotify Premium free and customize Spotify 160 kbps to 320 kbps with changing sample rate as 414,000 Hz for better quality.
Just have a try of this. Listening experience could be better. For more, please visit: AudFree
Just have a try of this. Listening experience could be better. For more, please visit: AudFree