Columbia Masterworks model 553 was my first stereo. My mom gave it to me and I just picked one up on the bay. Really really hard to find. 27 stations off the big yagi antenna at 20 feet in the air. Calculated the wpc at 2.1 watts based upon a B+ of 16.4 volts running quasi-complementary. I did not know that there were better receivers until the salesman at Pacific stereo told me that the Masterworks 553 was a bunch of crap. Then bought a Pioneer SX737 with Quadraflex ST11 speakers complete with a BIC940 turntable with a Shure M91ED cartridge if I remember correctly. Supposedly the Pioneer SX737 was at cost at 229 bucks. I think the year was 1976!I had a Columbia Masterworks receiver that my folks bought me when I was in high school. Used that for a long time.
While in college, I bought a used Marantz 2215 at the Schaak Electronics in Dinkytown near the University of Minnesota. Still have it, and it works great, although it could use a few new bulbs.