Yah, bought a few things from there, my favorite being a KLH all-in-one system I got in 1974 or so. I remember demos of the "new" Dahlquist DQ-10 and Tandberg stuff. I was a bit of a gypsy then, and ended up in the Navy, but I always stopped by when possible to see what was new. I smelled trouble when "The Wiz" moved in nearby.
I used to frequent them, Designatron and the Audio Den as well as some other far-flung shops in Nassau county. There was a nice store in or around Huntington too where I heard Brothers in Arms for the first time.
Having lived in Houston, San Diego, Bangor (where I contracted the HiFi jones), Norfolk and even Salina, KS, I sampled many shops and miss them all. Great people, great equipment. I wish I had better income and more time to hang around those places when I had the chance.
I now live in Northern NJ and have access to SkyFi, Audio Connection and all of the great Manhattan dealers, but end up buying from Crutchfield and the like. It's just not the same.
Greetings and salutations from wherever I am today.