It was about 1970, I guess. First time I ever got to play my Les Paul out of a Marshall Super Lead 100. I was in heaven for that gig. (prior to that, and after, far as that goes, cuz I just had the Marshall for that gig, I was having to put up with my VOX Super Beatle and not caring for it too much)

Fast forward a few years. By 1973 I'd been studying and playing classical guitar for about a year. I managed to swing a deal on a Jose Ramirez 1a Concert Model. Man-o-man, what a guitar. I owned it for 30 years and finally sold it when I began building my own guitars.

No real "This Changes Everything" that was music related until I began to wake up to the power of the DAW back in about 2000. I had already owned a copy of BiaB for a couple of years by that point, but I just used it mostly as a backing tracks program, and it was very useful for that. But being able to do my own recording at a quality that rivaled that of top-notch studios, well that was definitely revolutionary to my way of thinking.

And really, since then things have been evolutionary more than revolutionary. Some cool stuff has come around since then -- including the later BiaB editions! -- but still it's been stuff I've been able to assimilate without getting my socks blown off.