I regularly shopped at five of six Chicago Korvettes locations: Arlington Heights, North Riverside, Elmhurst, Morton Grove and Oak Lawn. Four of them were Korvette City, with a full hi-fi salon in addition to a record dept and appliances/tv/small electronics dept. Korvettes even had a proprietary (house) brand of hi-fi called XAM. It was the backwards spelling of the electronics buyer's cat, Max!
Tower Records first opened in Illinois in the 90's. I shopped at all 4 Chicago locations regularly: Clark St., Downtown (formerly Rose's flagship), Schaumburg and Bloomingdale. Also shopped on multiple visits 4th & Broadway NYC, old and new upper west side NYC stores, Trump Tower, Tower/Good Guys (electronics) superstore in Vegas, New & Old UNLV stores and New Orleans.
Became friends with several Chicago area Korvettes and Tower employees. They allowed me to exchange ANYTHING still in print for full credit, no receipt needed. Lots of 2ch LP's of mine became Quad LP's for an extra buck! My LP collection was already a couple hundred when I was in high school. I was one of their best customers.
Began buying Quad LP's in college. That eventually grew to over 500 QLP's & Q8's. Korvettes had an entire gondola full of Quad LP's! 1st three QLP's I bought: Santana III, Stoney End - Streisand, and Hold on to Me - Bonnie Koloc. Didn't have Quad gear yet, but was already doing the basic DY speaker arrangement.