I am new to Spotify and giving it a try with the basic service. My Windows 10 workstation has a better than decent audio system as evidenced by its delivery of expected quality on U-Tube, Pandora, and other sources. I just tried a few different albums on Spotify and all are of such low quality (uneven spectrum distribution suggesting extremely high compression and decompression, some distortion and frequencies that drop off after a few thousand kHz.
Is this normal for Spotify audio? I can A/B instantly between Spotify and other services and the difference jumps out at you.