I have used it on a Thorens TD 125 Mark II with an SME arm and currently use it on a Music Hall MMF 9 with the stock Rega arm. In both cases tracking weight is about 1.2 grams. Performance is excellent
Soundsmith reverse engineered the B&O cartridge series and manufacturers new replacements for all of the B&O tables using the last generation of cartridges, as well as using the same and similar (as well as substantially upgraded) units in their "traditionally" mounted cartridges.