The 20 year old Fidelity Research Mk1 3f shows no signs of distress when I play track 5,Cartridge tracking tests on the Audio System Test Record(Nat'l Research Council of Canada).
No loss of high end content either.
I think it is wrong to believe that a cartridge will wear out in such a short period of time as 2-4 years.
If handled properly, it should last longer.
You don't suppose the people who sell cartridges might have something to do with this type of audio mind set?
This cartridge I might add has seen service first on a LP12 with a FR12 arm, then an Oracle Delphi with EMT 11 arm,this is a span of 7 yearsof constant use before cd play.
Then it sat in it's box for the next dozen or more years until on a whim I tried it out on a VPI Scout.
I had been into some Grados and forgot why I stopped using the FR.
The best that the cartridge has ever sounded is now on a Rega P9 with the 1000 arm.
Even old scratched lps have less noise than when the cartridge was on the Scout.
I was looking at buying one of the newer mc, but that's not going to happen until this one bites the dust.
So,not all cartridges degenerate over time in my experience.
Maybe the FR's were just well built back in the 70's.
Maybe that's why they went out of business.
I wonder if the Shelter's will hold up like the FR's did.
Same designer.