Vintage Denon Direct Drive Turntable

I had a DP75 which was similar with the two piece platter. It was a less expensive version of the 80 for some reason,can't remember what the difference was. About a year old the speed became unregulated and it took off like a helicopter!Interesting arrangement, a tape recorder head that read a magnetic strip on the inside of the platter.Sent it back to Denon who could not fix it and therefore exchanged it with a "B" stock unit. 307 is a terrible arm design with mushy rubber seperating the arm tube from the pivot point.No rigidity and extreme loss of information. I would be nervous about one of these today,the rubber would probably be dried out making the arm useless.401 is a better arm,but needs a low mass high compliance cartridge.