Yeah, I remember, only my recollection is a bit different than yours, and most of the others who have answered this thread, as what I remember most is the music, rather than the system itself.
My brother (age 12) and I (age 16) went to a stereo store to window shop, way back in 1976, on what was then Saratoga-Sunnyvale Road (now DeAnza Blvd.) in Cupertino, at a store called, I think, Pacific Stereo.
I have no clue what the stereo components were, but, he played a Import LP of Supertramp's "Crime of the Century". Both of us were just amazed at the sound of this album and the system. I still remember the goose bumps as those first harmonica notes sounded.
The very next day we both bought copies of the album.
(FYI: While we loved the music, we both thought the pressing was a piece of crap (which it was, being a typical A&M American pressing). Didn't matter though, as the music still came through to warm our souls!)
Once I got a decent system, one of the very first MOFI albums I got, was Crime of the Century. (And when the CD came out I got that the first day it was released, and I picked up the MOFI gold CD as well. I now also have the UHQR (bought used) of this album too.)
Oh and by the way, the Speakers Corner re-release on LP is as good a pressing as I own, and I recommend you pick it up while you can, in case you too think that this is an incredible album, as my brother and I do.
So, if you are tired of my rantings here on Audiogon, and on the Audio Asylum, you have Supertramp mostly to blame!
Anyway, my two cents worth.