The running in time for a Airtight PC-1 Supreme?

Hi,

I've recently bought a new Airtight PC-1 Supreme, which I've put about 25 hours on so far. The cartridge replaces my Transfiguration Orpheus, and straight out of the box sounded bigger, more dynamic, and very listenable.

At the moment though, the bass feels excessive on certain records and the tops can be abrasive, particularly with trumpets.

I'm guessing that run in time for the cartridge is something like 50 to 60 hours, and that the bass might tighten up and the tops may become slightly less edgy during the rest of the run in.

Could any owners confirm?

Thanks,

David