I think IMHO it may not have anything to do with sex and that God may have blessed some with better ears than others. As much as I love my audio I am afraid I may be one of the people he passed over. It has taken a long time to train my ears to appreciate the nuances of a very high quality audio signal or live performance. God bless your wife for she has a most enjoyable gift.
Amps and Women
I have been happily married for over 20 years now. I am the supposed audiophile, yet my wife ,god bless her, can pick out the differences in amplifiers in about two seconds. I change over from my Spectral stuff to my Classe stuff,"Honey did you change the system again?" She was not even listening seriously, she was doing something totally different. So the question I pose, and my wife is not the only one I have noticed this with, do women in general possess better listening/hearing capabilties then men?? That is why I take her(and usually with great resentment on her part.) to audition audio equipment. In fact, in all fairness, she narrows the choices pretty quickly.