In 1975 I purchased a H/K ST7 turntable with a Rabco arm and mounted a GAS Sleeping Beauty cart. ran that into a GAS Goliath head amp Son Of Ampzilla a Phobe preamp and a pair of Polk model 10s, wow I was set for 10 years. I know you said one peice but this system started a beautiful relationship with audio as it delivered my music in an unforgettable way.
Your first component that was "special"
I got into hifi 40 years ago. I had a Pioneer receiver, Kenwood table, various entry level cartridges (ADC, Stanton, Empire) and Studio Design speakers. I wound up buying a Shure V15 Type 3 cartridge. That was the first piece of gear I bought that was way beyond ordinary. I had kept the cartridge until about 2o years ago- I sold it because by then no decent replacement stylus was available. Wish I still had it.