I agree with Allan, Heather and Pelly for the most part, and no tongue-in-cheek.
To me, "audiophile" conjurs the image of a high-end stereo buff - a person with very discerning taste, and who deploys costly gear and trunk-line sized cabling and all-too-often loves cabinets with multiple mid-bass drivers, no sub and limited cabinet volume.
Most commonly, to my chagrin, they will not ackowlege the importance of signal-path EQ to optimize for room response. A few have allowed me to insert an EQ and tune to the room - with vastly improved response - but they devoutly prefer the purist approach.
I admire them. It ain't me, and I am intrigued by their perception of quality sound. They get the mid-bass and HF fine, but most typically there is a great deal of LF missing in their approach.