A moment when you realized better sound was possible.


In 2001 i bought a car with an upgraded JBL sound system. As the years went by I got used to that sound, and one day I was listening to a CD in the car, and when I got home brought the CD in to continue listening. The sound on my home system was flat, dull and dead sounding in comparison. That realization started my on a quest for better sound, and years and dozens of speaker/amp combinations later, my home system sounds much, much better.
dtapo
iron47 -- You're on your way!  Just try not to go bankrupt too quickly. And try not to make your neighbors too murderous.
I have external crossovers. I read on a forum (maybe this one) about how solid core wire sounds different than stranded. I went to the hardware store and grabbed some 20 gauge solid core doorbell wire and ran that between the crossover and the tweeters. This was eye opening for me because it proved to me that cables do in fact matter. 
Two more experiences further opened my mind: upgraded interconnects and a power cable for my amplifier. I began to realize that virtually every piece of the chain is in a sense a component, which sent me on a mission to tweak every last piece of my system to get the best sound possible out of it.
I began to realize that virtually every piece of the chain is in a sense a component, which sent me on a mission to tweak every last piece of my system to get the best sound possible out of it.

"Virtually". Good one.
I began to realize that every piece of the chain is indeed a component, which sent me on a mission to tweak every last piece of my system to get the best sound possible out of it.

FIFY.
Hi,
age 13 and i had a mono Philips record changer with ceramic cartridge and a full range speaker having the magnet infront. I did not even know what stereo was so i thought just adding a speaker would upgrade it to stereo. NO, but i clearly understood that the new speaker was no match  compared to system's original. A year later i heard my first stereo system playing Child in time from Deep Purple, that was it, but it took me 1 more year to buy my first real stero (at the store i listened only to the speakers with the amp), Wharfedale Lintons, Kenwood amp, Lenco tt. So i could hear speaker differences, cartridge differences (i changed 3 on that Lenco) and if an amp had good drive or not. The biggest step though happened, back in the 80's, and with no return, when i bought secondhand a Mission 775SM with 774 tone arm, a new then Cyrus 2/PSX (plastic cover) driving a new TDL Studio 2 speaker. A Pink Triangle with Alphason HR100S and ARC SP-9MKII in the early 90's sealed it.