Description
Stylus Insert for Sumiko Amethyst
- Upgrade for Sumiko Rainier, Olympia, Moonstone, and Wellfleet
- Line-Contact cut, nude (r/R 5 x 20 μm)
- Dynamically measured lateral compliance: 12 μm*
Technical Details for the Stylus Insert:
- Dynamically measured lateral compliance: 12 μm*
- Stylus diamond: Line-Contact cut, nude (r/R 5 x 20 μm)
- Recommended tracking force: 2 g
*Measured at 100 Hz.
Upgrade for MM Cartridges The stylus insert allows for a straightforward upgrade of your Sumiko MM cartridge by simply replacing the stylus holder. Important: All upgradeable cartridges operate with the same tracking force. After upgrading the stylus insert, no adjustments are necessary.
Since the Black Pearl and Pearl models are identical except for the stylus, a Pearl stylus enhances the Black Pearl to Pearl status. However, the Rainier to Amethyst models also differ in their generators. Detailed information on these differences can be found in an extensive article by Bernhard Rietschel in LowBeats magazine.
Benefits of a Higher-Quality Stylus Insert: Lighter stylus holders, nude or better-cut diamonds, and improved polishing of the diamond—regardless of whether worked against or with the structure of the diamond crystal lattice—significantly enhance sound quality.
Upgrade Levels of Stereo Styli:
- Rainier: Basic stylus holder. Diamond with elliptical cut (r/R 8 x 18 μm)
- Olympia: Better-selected stylus diamond. Diamond with elliptical cut (r/R 8 x 18 μm)
- Moonstone: Lighter aluminum stylus holder. Diamond with elliptical cut (r/R 8 x 18 μm)
- Wellfleet: Nude diamond with elliptical cut (r/R 8 x 18 μm)
- Amethyst: Nude Line-Contact diamond (r/R 5 x 20 μm)
Optional Shellac Stylus for MM Cartridges: For the Rainier to Amethyst models, the RS78 stylus with spherical cut (R 76 μm) is available, specifically designed for shellac records.






