Hope you don't mind ... I beg your indulgence as I'm going to bend the rules a bit and list several audio epiphanies that really stick out in my mind.
1st epiphany was about three years ago when hearing the Focus Audio FS-688 over Naim equipment. I simply hadn't yet heard that level of clarity, imaging, tempo, etc.
2nd epiphany came when hearing the 688's big brother the FS-888 over Vitus Amps. The track played was Spanish Harlem by Rebecca Pigeon - she was in the room with us ... spooky, very spooky.
3rd epiphany was a little over a year ago when I had the opportunity to hear the Magico Model 6 with Behold amps at the dealer close to home in Hong Kong. It was the audio equivalent of "shock and awe", truly inspiring. There was a percussive track played, whose title escapes me now, and the sound stage, clarity, imaging, etc., was incredible. Drums were 6' past the outer edge of each speaker!! Listening to Nat King Cole as well was never better.
Lastly, just recently a buddy and I got a chance to hear the Magico Mini IIs over Spectral amps at the same the dealer above. He threw on Lyle Lovetts' "Church". Well, in no time flat, we were transported from Central, Hong Kong to a good ol' fashion revival in the Deep South, USA. Never have I heard anything so enrapturing the Buddhists in the room were converting left and right :o) !