Name: Stylus D 25 M
Brand: Ortofon
SKU: 5705796130133
Price: 79.0 EUR
Availability: InStock

Ortofon Stylus D 25 M Replacement Diamond

The Stylus D 25 M is a replacement diamond designed and manufactured by Ortofon, one of the world leaders in phono cartridges and accessories for turntables. This precision diamond is specially developed to equip Ortofon cartridges from the OM, OMP, and TM series. It offers exceptional audio performance and great durability.

Technical Specifications

Diamond Type

The Stylus D 25 M is equipped with a precisely polished spherical diamond. The spherical tip has a radius of 25 microns (0.025 mm), making it suitable for reading the microgrooves of modern vinyl records. This spherical profile ensures precise groove tracking and minimizes record wear.

Compliance and Tracking Force

One of the key specifications of the Stylus D 25 M is its dynamic lateral compliance of 20 µm/mN. Compliance represents the flexibility of the diamond’s suspension. A high value like this allows the diamond to better follow the groove undulations, even at high frequencies.

The recommended tracking force is between 1.5 and 2 grams, with an optimal value of 1.8 grams. This is the vertical force that the diamond tip exerts on the record surface. Precise adjustment of this parameter is essential to achieve optimal sound reproduction while preserving both the record and the diamond.

Tracking Ability

Tracking ability represents the diamond’s capacity to stay in contact with the groove walls, even during rapid and high-amplitude modulations. The Stylus D 25 M offers a remarkable tracking ability of 70 µm at a frequency of 315 Hz, with the recommended tracking force. This allows it to deliver detailed and dynamic sound without distortion.

Vertical Tracking Angle

The vertical tracking angle is 20 degrees, which corresponds to the standard for modern Hi-Fi cartridge diamonds. This angle, combined with the spherical profile, ensures optimal contact between the stylus tip and the groove walls, for precise reproduction of the engraved stereo information.

Compatibility

The Stylus D 25 M is designed as a replacement diamond for a wide range of Ortofon phono cartridges, including:

OM (Omega) series cartridges: OM 5E, OM 10, OM 20, OM 30, OM 40
OMP series cartridges: OMP 5E, OMP 10, OMP 20, OMP 30, OMP 40
TM (Twin Magnet) series cartridges: TM 5E, TM 10, TM 20, TM 30, TM 40

This extensive compatibility makes it a preferred solution for many vinyl enthusiasts equipped with turntables featuring Ortofon cartridges. Replacing the worn diamond with a Stylus D 25 M can rejuvenate these renowned cartridges.

Manufacturing Quality

Ortofon is renowned for the excellence of its products, the result of long experience and artisanal know-how. The Stylus D 25 M benefits from this high level of demand at every stage of its manufacturing:

Rigorous selection of raw diamonds
High-precision cutting and polishing carried out in Ortofon’s workshops in Denmark
Strict quality controls throughout the production process
Careful packaging ensuring optimal protection of the diamond

Each diamond is delivered in a transparent plastic case and an individual cardboard box. It is thus protected from shocks and dust until it is mounted on the cartridge.

Installation and Adjustments

Replacing a worn diamond with a Stylus D 25 M is a delicate operation that must be performed with care. Ortofon provides a detailed manual explaining the step-by-step procedure to follow. The key steps are: