I then realized that the headphones cost around $2000 (Audeze LCD-3) and a dac that I didn't recognize, but I'm sure it wasn't cheap.
But there were too many variables to tell what made the difference. Was it the expensive headphones + dac? Was it the better quality audio? Was it the different mastering of the song that I know?
Either way, I still listen to my "shit" audio setup because it's good enough for me and what I'm used too.