Jadis I300

The emotion of tube sound, signed by Jadis

In the world of high-end audio, there is a distinct group of enthusiasts: uncompromising purists who champion simplicity in tube amplification, focusing on the use of the very first directly heated triodes ever developed. Among them, the legendary 300B stands as the ultimate reference.

The Jadis I300 is built around a simple, zero-feedback push-pull output stage using 300B tubes, delivering the unrivalled musicality for which this iconic tube is renowned.

Following the input stage based on an ECC82, the signal is fed to a Schmitt phase splitter, then to a pair of 6SN7 driver triodes, providing all the drive required to operate the 300B output tubes with authority.

The power supply is another major strength of the I300. Each amplification stage benefits from its own dedicated power supply, with particular attention paid to the 300B tubes themselves. As directly heated triodes, their filament also serves as the cathode, requiring an exceptionally clean supply. To achieve this, the I300 incorporates no fewer than seven independent power supply circuits.

As with every Jadis amplifier, all transformers are designed and manufactured in-house at our workshop. The power transformer features a custom EI M6X magnetic core, engineered for outstanding stability, silent operation and minimal heat generation.

The output transformers are built on a double CV38 magnetic core, manufactured to Jadis’ exacting standards. The I300 is the only integrated amplifier in the Jadis range equipped with these exceptional output transformers, allowing it to deliver a level of authority and dynamic performance that far exceeds what its modest 10 watts per channel might suggest.

In terms of design, the I300 remains faithful to the Jadis aesthetic with its elegant, compact proportions. Its 2 mm thick 304L stainless steel chassis provides exceptional rigidity while easily supporting the weight of the internal components. For added convenience, the amplifier is supplied with a remote control.

Listening to the I300 reveals everything that makes the 300B legendary: exceptional precision, remarkable delicacy and an unmistakably natural musicality that brings every recording to life. There is no doubt that it will delight discerning audiophiles who appreciate the unique charm of directly heated triodes.