Sumiko Moonstone RS Replacement Stylus

Available at Vinyl Sound in Toronto, Canada, the Sumiko RS Moonstone is the top-tier replacement stylus in Sumiko's acclaimed Oyster Series — the flagship of three interchangeable styli designed for the Rainier, Olympia, and Moonstone moving magnet cartridges. Hand-crafted at Excel Sound in Yokohama, Japan, where Sumiko has maintained a production relationship for nearly four decades, the RS Moonstone delivers the warmth, richness, and low-noise refinement that the Moonstone cartridge is celebrated for — at a fraction of the cost of replacing the entire cartridge.

The Smart Upgrade Path

Sumiko's Oyster Series is built around a common cartridge body shared by the Rainier, Olympia, and Moonstone — meaning all three stylus assemblies are fully interchangeable. If you already own a Rainier or Olympia cartridge body, simply dropping in the RS Moonstone stylus is an instant, tool-free upgrade to the highest Oyster performance level. The RS Moonstone also installs directly on Pro-Ject Debut Carbon EVO turntables that ship with a Sumiko cartridge, making it the ideal stylus upgrade for one of Canada's most popular entry-level hi-fi turntables.

Elliptical Diamond Stylus — More Detail, Less Wear

The RS Moonstone features a 0.3 × 0.7mil elliptical diamond mounted on a low-mass aluminum alloy cantilever. Compared to the conical styli found on budget cartridges, an elliptical tip traces a narrower contact patch in the groove, retrieving more high-frequency detail, reducing inner-groove distortion, and causing less long-term wear to your records. SoundStage! awarded the Moonstone cartridge its Editor's Choice designation, praising its bass slam, sweet midrange, and "crisp, sparkling highs." Analog Planet described it as delivering "highly sophisticated, delicate, rich, somewhat warm sound."

Key Features

• Top-level stylus in the Sumiko Oyster Series — flagship of three interchangeable options
• 0.3 × 0.7mil elliptical diamond stylus for superior groove tracing and detail retrieval
• Low-mass aluminum alloy cantilever — reduces tracking mass for improved transient response
• Interchangeable with Rainier and Olympia cartridge bodies — no tools required
• Compatible with Pro-Ject Debut Carbon EVO as a direct stylus upgrade
• Hand-assembled at Excel Sound, Yokohama, Japan — over 40 years of cartridge craftsmanship
• Works with all standard MM phono stages and the vast majority of tonearms
• Distinctive orange finish for easy identification

Frequently Asked Questions

What cartridges is the Sumiko RS Moonstone stylus compatible with?

The RS Moonstone stylus is interchangeable with the Sumiko Rainier, Olympia, and Moonstone MM cartridge bodies. All three models share a common housing, so the stylus snaps directly onto any of them without tools or adjustment.

Is the Sumiko RS Moonstone stylus compatible with the Pro-Ject Debut Carbon EVO?

Yes. The Pro-Ject Debut Carbon EVO ships with a Sumiko cartridge, and the RS Moonstone is a direct plug-in replacement stylus upgrade. No tonearm adjustment is required beyond verifying tracking force with your tonearm's counterweight.

What type of stylus tip does the RS Moonstone use?

The RS Moonstone uses a 0.3 × 0.7mil elliptical diamond tip mounted on a low-mass aluminum alloy cantilever. An elliptical stylus traces more groove detail than a conical tip and causes less record wear, making it a significant step up from entry-level stylus designs.

How do I know when to replace my Sumiko Moonstone stylus?

Sumiko recommends replacing the stylus after approximately 500–1,000 hours of play. Signs of wear include increased sibilance or distortion, loss of high-frequency detail, or audible mistracking — particularly on inner grooves. A worn stylus can damage records, so timely replacement is important.

Where is the Sumiko RS Moonstone stylus made?

The RS Moonstone is hand-assembled at Excel Sound Corporation in Yokohama, Japan — a partnership Sumiko has maintained for nearly 40 years. Each stylus is individually auditioned before leaving the factory.

Where can I buy the Sumiko RS Moonstone replacement stylus in Toronto, Canada?

The Sumiko RS Moonstone replacement stylus is available at Vinyl Sound in Toronto, Canada. Contact us online or visit our store for current pricing and availability.