http://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality
A test trying to determine if people can really tell the difference between low quality mp3 (128kbps ), high quality mp3 (320 kbps) and lossless audio (flac).
I got 2/6 flac but only chose the lowest quality once. This was through my logitech 2.1 computer setup. Not the best listening station in my house.