The Aurum was not so much a successor to the Standard arm as a better developed version of it.
Most notably, the 3 visually obvious improvements were the use of a larger diameter arm tube and the fixed headshell. Though this precluded the azimuth adjustment, the improvements to the sound warranted the decision. Slots were machined in the headshell to optimise cartridge geometry.
The third improvement over the Standard arm is less obvious; the bearings cups were made larger
The needles were super-
The final alteration was the inclusion of slots in the base plate to increase the scope of adjustment on the turntable.
Production ran for 18 months around mid 1984/1986.