you can experiment, yr own ears are yr best judge.
try ripping orginal cd with lossless windows media player. burn the data on blank
compare both on high end cd player.
or take them to hi end store, and play on a expensive single disc cd player.
shops let you play yr own cds to check a cd player. dont play on a expensive multi cd changer, these are limited to a certain quality.
you should be able to "clearly" tell the difference