I lived in Ft Lauderdale in the 70s. What was your store? I bought my first hifi system in ‘73. Well, it was hifi to me. All I could afford was a Nikko receiver, Smaller Advents, Garrard turntable that I bought from the first Sound Advice store on Federal Highway. My first experience was great and that set the standard. I ended up lurking in all the hifi stores I could find. Unfortunately, SA got too big and lost what made it fun.
I remember Luskins, HiFi Associates and of course Sound Advice.