Jadis Electronics I300
Jadis’s 300B push-pull I300 delivers organic midrange, controlled bass and a vast, finely layered soundstage, turning vocals, jazz and large-scale classical into deeply involving performances. HIFI KNIGHTS highlights its clean resolution, natural presence and three-dimensional imaging, while its 10W Class A design brings surprising drive with sympathetic loudspeakers. This is a lavishly built, purist analogue integrated for listeners who value musical connection over convenience.
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Deliciously Crispy
Sound Quality
95/100
Build Quality
89/100
Features Connectivity
83/100
Value for Money
88/100
Pros
Natural, richly textured and detailed sound remains smooth and free from harshness.
Expansive, stable three-dimensional imaging with strong depth layering and convincing instrument placement.
Despite its 10W rating, it delivers controlled bass, expressive dynamics and capable drive with suitable speakers.
Exceptional fit, finish and substantial build quality befitting a long-term high-end component.
Cons
The basic remote control feels out of character with the amplifier’s otherwise luxurious build.
Its modest power calls for careful loudspeaker matching, particularly for difficult loads or very high-volume listening.
Purist connectivity means no built-in DAC, phono stage, streaming or headphone output.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 95/100
Reviewers portray the I300 as an unusually open, refined and emotionally involving 300B design, combining rich tonal colour with clean detail and substantial spatial scale. Its low-power Class A output was reported to remain composed and expressive even at demanding listening levels with suitably matched loudspeakers.
Transparency Resolution
94/100
HiFi Pig found the I300 detailed without becoming ruthless or hard at the frequency extremes. HiFi Knights likewise heard above-average resolution, high transparency and purity, with excellent differentiation, air and a particularly clean treble.
Tonal Balance Musicality
95/100
Both reviews emphasise a natural, organic and richly saturated presentation. HiFi Pig praised its freedom from harshness, bass control without bloat and balanced connection to the music, while HiFi Knights described voices as remarkably natural and present.
Dynamics
94/100
Despite its 10W Class A rating, HiFi Pig found the amplifier wonderfully dynamic and never short of steam at very high levels in its system. HiFi Knights also praised the rendition of changing pace, dynamic contrasts and the differing force of piano strikes.
Soundstage Imaging
96/100
Spatial performance is a major strength. HiFi Pig heard a wide, deep and high stage with stable, naturally placed instruments, while HiFi Knights described an enormous panoramic image, strong depth gradation and near three-dimensional artist presence.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
89/100
HiFi Pig reports that every aspect of the amplifier suggests a high-quality product built to last. The 39kg chassis and extensive tube complement indicate a substantial design, although the supplied reviews offer little detail on internal construction or long-term ownership.
Features Connectivity
83/100
The I300 is deliberately analogue-focused, providing five RCA line inputs, a bypass/preamp output, one speaker-output pair and remote control. There is no onboard phono stage, headphone socket, balanced connection, DAC or streaming provision, so it suits a separate-source system rather than an all-in-one setup.
Value for Money
88/100
At €13,900, the I300 is an expensive specialist integrated amplifier. HiFi Pig nevertheless concluded that buyers could spend considerably more and fare worse, suggesting that its distinctive musical and spatial performance makes the premium credible for listeners seeking this type of 300B design.
Reviews & Sources
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Specifications
- Type
- Integrated Amplifier with remote control
- Bias
- Automatic
- Power
- 10W – Classe A
- Input/Output
- 5 lines, 1 Bypass output, 1 loudspeakers output
- Bandwidth
- 20Hz to 55kHz @ -3dB
- Load impedance
- 1 to 16 Ohms
- Sensitivity
- 100mV
- Tubes
- 4 x 300B, 2 x 6SN7, 3 x ECC82
- Dimensions
- 40 x 40 x 25,5 cm
- Weight
- 39 kg
- Consumption
- 200 VA
- Finish
- Gold or Silver plates
Manufacturer's Description — Jadis Electronics
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.
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Authorized dealers for Jadis Electronics I300
- Absolute Sounds — in-store — London, England, United Kingdom (website)
- Alen Audio — in-store — Extramurs, Comunidad Valenciana, Spain (website)
- AMPL’HIFI — online and in-store — Nîmes, Occitanie, France (website)
- Arizona Hi-Fi — in-store — Phoenix, Arizona, United States (website)
- Assai Audio — in-store — Centro, Comunidad de Madrid, Spain (website)
- Audio Absolute — in-store — Tambon Bang Khun Kong, Chang Wat Nonthaburi, Thailand (website)
- AUDIO EXCLUSIVE — in-store — Wels, Oberösterreich, Austria (website)
- Audio Magic - EU — online and in-store — Wola, Województwo mazowieckie, Poland (website)
- Audio Video Feel — online and in-store — Charenton-le-Pont, Île-de-France, France (website)
- AUDIO VIDEO PASSION — online and in-store — Perpignan, Occitanie, France (website)
and 33 more verified dealers