BEFORE / AFTER SAMPLES
Its hard to compare two recordings when they are different loudnesses. Usually the louder version sounds better just because its louder. And since mastering usually includes raising the perceived loudness of the original mix, I've level-matched these samples to provide a fairer comparison. They are in different players so you can easily A / B the files.
Snakeskin - Spit
from I Love My Room
Glazer - Working Man's Dog
from On a Prairie, Live in the Dirt