No experience with the Yamamoto headshells, however if you do a Google search you can read the comments in some of the audio forum threads (VinylEngine, LencoHeaven, etc). The Jelco HS-25 which comes with the 750 tonearms is 12g in mass. My advice is to mount the cartridge with the HS-25 first then determine make a decision on how light/heavy you can go with the headshell. The Yamamoto headshell mass varies widely depending on the model.
Posted in: Jelco Tonearms and Accessories