To me, at the core of being an audiophile, is the desire to reproduce sound as accurately and precisely as possible. The best way to know if sound is being reproduced accurately is to go see as many live performances as time, and budget will permit. Once you've heard a band you really like live several times, now go try out their latest release on several different pieces of hardware and purchase the one that does the best job of sounding like the real thing. You can learn all there is to know about measurements and settings and theory but in the end, if you don't enjoy it, what did you gain by all this?