Somebody pin the above quote. Subjective preference can only be defined by oneself through one's own senses. No one can experience what the other person is experiencing so whatever they say cannot be relied upon as the absolute truth. This is the existential theory that defines our own individual existence but curiously does not confirm the existence of others. The very common mistake made in this arena is that subjectivists tend to apply their own preference to all others and forget to add the provision "to me". Objective results are repeatable in the lab and some important insights into the design can be gained. If the goal of the objectivist is to find the most signal accurate amp, then inexpensive gear such as pro amps achieve the goal. However, many find signal accurate amps to sound objectionable (pun intended). Moderates are able to correlate objective results with what they are hearing and use lab results to enhance their listening experience. Agreed. Unfortunately, the above brief does not offer any insights into what is an audiophile. I'll offer this for starters. An audiophile has a subjective sound preference that has been validated through comparison audition of a wide range of gear. This definition is inclusive of all hearing conditions and allows for any gear choice to be made. In short, anyone of any class can be an audiophile.