Ortofon ST-70 Dual-Mono Transmitter

The Ortofon ST-70 is aimed at discerning audiophiles and music lovers who do not compromise when it comes to the purity and detail of sound reproduction. In a world where sound quality often suffers from technical compromises, the ST-70 sets new standards by combining top-notch components and world-renowned engineering in one device. This commitment to the highest quality results in a sound experience that goes far beyond the ordinary.

High-quality components and technical excellence

The technical basis of the ST-70 is a carefully thought-out construction based on high-quality Lundahl™ transformers. These transformers are not only known for their excellent materials and workmanship, but also for their ability to faithfully reproduce even the finest nuances of a piece of music. To ensure the purity of the audio signal, each Lundahl™ transformer is surrounded by a specialized mu-metal shield. This shield is particularly effective in suppressing both internal and external sources of interference, so that electromagnetic interference is almost completely eliminated. This means that even complex musical arrangements are reproduced in their full, undisturbed clarity.

Dual-mono design and improved signal processing

An outstanding feature of the ST-70 is its dual mono design. This concept gives each channel its own discrete circuit. This separate signal processing effectively prevents crosstalk and possible distortion between the channels. The result is a precise stereo image that creates a realistic and lifelike soundscape. Thanks to the extended stereo separation, individual instruments and tones are so clearly separated from one another that every detail seems almost tangible. This meticulous attention to detail and the unadulterated reproduction of the original sound image are key features that make the ST-70 an indispensable component in high-end audio systems.

Accurate tonal balance

The ST-70's accurate tonal balance is ensured by the harmonious tuning of its internal components. Not only the selection of the Lundahl™ transformers plays a role here, but also their precise integration into the overall system. The special mu-metal shielding makes a decisive contribution to ensuring that the signal is retained in its original form - without disturbing influences or unwanted modulations. This enables a lifelike reproduction in which the listener can immerse themselves in a world of sound that is both dynamic and extremely detailed. This technical finesse makes the ST-70 one of the quietest and most insightful transformer systems on the market.

Versatile applications and compatibility

Another important aspect of the ST-70 is its versatility. Thanks to internal jumpers that allow switching between two gain and impedance variants, the device remains compatible with most moving coil (MC) cartridges. This flexibility is invaluable for audiophiles, as it allows them to tailor their system precisely to the components used. This not only ensures technical functionality, but also preserves an aesthetic purity that has often become rare in modern hi-fi systems. The ST-70 fits seamlessly into any high-quality audio system and, thanks to its adaptable design, offers an outstanding solution for a wide range of applications.

Integration into existing systems: The role in the Cadenza Series

The role of the ST-70 becomes particularly interesting in conjunction with the Cadenza Series, a product range known for excellent sound fidelity and innovative technology. In this combination, the ST-70 acts as a perfect partner by optimally processing the signals from the MC pickups. The need for such a transformer is explained by the intrinsically low output voltage of MC pickups. In order to transform this low level into a usable signal, a higher gain is required. This is where devices such as step-up moving coil transformers or MC phono preamplifiers come into play, which meet this requirement.

The advantages of a passive transformer

The decision to use a step-up moving coil transformer such as the ST-70 is based on fundamental differences in function and sound character compared to active preamplifiers. MC phono preamplifiers often use active components, which in some cases can lead to a slight coloration of the sound. The ST-70, on the other hand, is completely passive. This purely analog, passive solution guarantees that the original signal is retained in its purest form - without additional electronic intervention. The excellent noise performance and the almost error-free signal transmission ensure that even the finest sound nuances are preserved unadulterated, making the ST-70 a favorite among audiophile purists.

Mechanical and optical quality

In addition to its technical brilliance, the ST-70 also stands out for its mechanical and optical quality. The precise workmanship and careful choice of materials reflect a deep understanding of the needs of music lovers. Every aspect - from the precise winding of the transformers to the precise integration of the internal jumpers - is designed to ensure maximum sound fidelity and reliability. This meticulous attention to detail combined with modern engineering makes the ST-70 an outstanding example of audiophile perfection.