I have been using Grado's for 30 years,so here's the scoop!
There was a signature 8 and 10 then they came out with the Z line which was the mcz,tlz,xlz,the v at the end of the number was the mark five version. If you have a gold with a tlz stylus something is rotten in Denmark!
There was a signature 8 and 10 then they came out with the Z line which was the mcz,tlz,xlz,the v at the end of the number was the mark five version. If you have a gold with a tlz stylus something is rotten in Denmark!