Or you think you hear the difference because you actually know which files you play. Do a double blind test and you will fail. Professional musicians fail at 320 vs original tests.
Not to mention that I am more of a sound engineer who has a lot to do with sound quality while musicians care less about that, I know several musicians who could not setup even basic sound system. It is also pretty common that DJs (and other types of musicians) require the roads to help them to achieve the best sound of their music. The musician is in charge of the music, while the sound engineers are in charge of the sound. Quiet different subjects.
