Well I just must weigh in here. Chakster has it right, the AR turntable was a terrible design. Specifically the problem was the arm. It had too much friction. Cartridges and records wore unevenly because of this problem. I was in the business for most of the decade of the 1970s and looked at literally hundreds of these using Wild-Heerbrugg M5 microscopes (I still own one) to examine the stylli, an O-scope, usually a McIntosh, and test records to optimize set up etc. Stylii invariably wore unevenly on AR turntables. The arm was the problem, the rest of the AR turntable was excellent. Thorens was the first to come up with a better solution with their TD-150 and later the even better TD-125. Many other companies also came up with better players. The better changers of the era from Dual and Miracord also outperformed the AR at least in the arm department. Again, to repeat, I looked at hundreds of these things over a decade, using the best available microscope and excellent test equipment. This is not onesy-twosey anecdotal testimony. If you think otherwise you are living in a dream world.
A 60 year old turntable design is still going strong!
Way before my time but an interesting take on a classic table!
https://www.youtube.com/watch?v=NOlhiZ902hY
https://www.youtube.com/watch?v=NOlhiZ902hY