The only thing that I could find regarding "calibrated" was that this had something to do with the "transtrem" system.
I just bought a set of Steinberger brand strings for my Steinberger Spirit and they say "Non-Calibrated" on the package. Although it says "Officially Approved by Steinberger" on the package.
I just bought a set of Steinberger brand strings for my Steinberger Spirit and they say "Non-Calibrated" on the package. Although it says "Officially Approved by Steinberger" on the package.