Mine was a pair of Infinity RSIIb speakers, which led me to seek better amplifiers, which led me to seek a better preamplifier, which led me to …. And here I am almost a half century later with what I think is a decent system that produces, IMHO, excellent sound quality, assembled over the last four years at what, in today’s prices, seems “reasonable.”
the gateway product that turned you into an audiophile
@foggyus91 suggested/pushed/encouraged me to start a thread about this. It was related to Darko's post about 12 audiophile misconceptions. One was that we are all about music - vs gear. I think that subject has been chewed up already a 100 times. I am not sure anyone has anything new to say.
However, that made me think about the day I turned into an audiophile.
It was when I bought my first "gateway" product that was affordable but audiophile quality and led me to explore more and tweak and switch and experiment and never be fully content but always be smiling when I turned the power on. It's been about the sound and not the music and that's fine. But I realize now that those Monitor Audio speakers I bought from craigslist were my gateway drug 
Were you always an audiophile or was there such a moment and a piece of hardware that made the difference?
(Lastly, I am very uneasy and on the fence about this forum and starting a thread - for my last correspondence with the moderators. What I learned should bother anyone who cares about fairness or even the appearance of it. I can't discuss it because it will get removed - I tried, my comment lived for less than 5 minutes, )