Sumiko Moonstone


The Oyster Series’ premium Moving Magnet cartridge

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Sumiko Moonstone

Oyster Series

The Oyster Series’ premium Moving Magnet cartridge range features four models with a matching aesthetic, all named after a different type of Oyster.


The Moonstone is the “penultimate” model in the range and features a finely polished elliptical stylus for accurate information retrieval from the record groove.

Mounted on to a bespoke cantilever, and utilising a smaller magnet than its more affordable siblings, the Moonstone still uses the same integrated body and generator system as its kin, which is designed to significantly reduce internal resonances.

The end result is a still affordable high-performance moving magnet cartridge that gives the punch and convincing realism of a good moving magnet design, but with a well-balanced, dimensionally dense and breathtakingly dynamic sonic spectrum that’s more relatable to a moving coil-type.

The Moonstone utilises the same cartridge body as the Rainier and Olympia, but is of a different construction to the range-topping Amethyst.

Key Features:
Moving Magnet cartridge with 0.3 x 0.7 micron Elliptical stylus
Excellent sound-staging ability, similar to a moving coil-type cartridge
Low-resonance body and generator system
Pure copper internal wiring
Overhead mounting design
Medium/High output for easy matching to a phono stage
Easy to set-up and install
RS Moonstone replacement stylus available

Sumiko Moonstone specifications

Frequency Response:
12Hz – 33kHz

Output Voltage:
3mV @ 1kHz

Load Impedance:

Channel Seperation:
30dB @ 1kHz

Channel Balance:
0.5dB@ 1kHz

Stylus Type:

12×10-6 cm/dyn @100hZ

Tracking Force Range:
1.8 – 2.2g

Recommended Force:

Cartridge Weight:


Additional information





Phono Cartridges

Since the production of the first Sumiko cartridge in 1982, Sumiko has been focused on creating phono cartridges that combine state of the art technical performance with the practical requirements of superb tracking and a musical, non-fatiguing, sonic presentation. From their budget-friendly Oyster Moving Magnet models, to their Low Output Moving Coil Reference cartridge designs, all Sumiko Cartridges are hand-built in Japan by skilled artisans to excel at the reproduction of analogue music

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