SR-X9000 Electrostatic Earspeaker (Flagship Model)

The history of X - THE Ω HERITAGE

Discover the pinnacle of electroacoustic excellence with the SR-X9000, STAX's flagship earspeakers. Born from a legacy of innovation and a passion for unparalleled sound quality, these earspeakers transcend the ordinary listening experience, pushing the boundaries of audio perfection.

Evolution to “MLER-3”
At the heart of the SR-X9000 lies the revolutionary MLER-3 electrode. Evolved from its predecessor found in the SR-009S, this four-layer electrode combines etched and metal-mesh layers through advanced diffusion junction technology. This enhancement not only enables the production of larger, round-shaped metal-mesh electrodes but also elevates sound transparency and minimizes vibration-induced distortion, setting a new standard for clarity and responsiveness.

Passion for metal-mesh
The round shaped metal-mesh which was installed in SR-X reduced air resistance and the effect of reflection. This increased the sound transparency. So, metal-mesh is the ideal material of fixed electrodes. However, bigger and thinner metal mesh electrodes are poor in rigidity and may make sound unclear. This is the reason why it was too hard to install metal mesh electrodes in STAX products. In 1990s, SR-Ω, in which the metal mesh electrode is installed, was developed. Because the metal mesh electrode was made bigger for this model, it had to be reinforced with an adhesive by hand. This is a very high precision work. So, it was extremely difficult to manufacture metal mesh electrodes for SR-Ω. The stable mass production could not be realized. This is the reason why SR-Ω was sold in very small quantities in spite of its high sound quality.

The diaphragm increases 20% in size compared with the previous flagship model
The SR-X9000 showcases an enlarged diaphragm, 20% larger than its forebear, the SR-009S. Crafted from an ultra-thin, super-engineered plastic film, this diaphragm achieves a near-weightless state, ensuring swift transient response and unparalleled linearity across all frequencies. The result is an expansive sound field that reveals the finest details in your music.

The enclosure which is made of tough machined aluminum eliminates unnecessary vibrations
Encasing these advanced components is a robust machined aluminum enclosure. This meticulously designed structure secures the sound unit in place, eliminating extraneous vibrations and ensuring a pure, undistorted auditory experience. The innovative tilt guard mesh further refines sound delivery, its unique arrangement optimizing reflection angles to ensure crystal-clear, uncolored sound.

The tilt guard mesh design
Complementing the structural advances, the SR-X9000 earspeakers boast a stainless-steel arc assembly, equipped with a 9-step adjustment system for a precise and comfortable fit. Complemented by a stabilizer to dampen residual vibrations and genuine leather head pads and ear pads, these earspeakers promise unparalleled comfort for extended listening sessions.

The stainless-steel arc assembly with 9 steps adjusting click system
Connectivity is equally considered, with STAX's bespoke low-capacity, wide hybrid cable employing ultra-pure 6NCu annealed copper and silver-plated wires. This configuration, coupled with replaceable cable options, ensures not just exceptional sound transmission but also durability and adaptability to personal listening preferences.

The comfortably fitting ear pads
The material of the ear pads is genuine leather (sheep skin) which has excellent breathability and softness. Genuine leather makes the earspeakers to closely fit your ears for a long time and you can fully enjoy the high-quality bass and vivid sound. This also reduces fatigue and you can comfortably listen to the music for a long time.

STAX original low-capacity wide hybrid cable made of 6NCu ultra-pure annealed copper wire and silver-plated annealed copper wire
The material of the core cable is 6NCu ultra-pure annealed copper wire (φ0.14×3). The material of the around core cable is silver plated annealed copper wire (φ0.08×９). STAX original wide parallel 6-strand cable is used.

Replaceable cables
Connectivity is equally considered, with STAX's bespoke low-capacity, wide hybrid cable employing ultra-pure 6NCu annealed copper and silver-plated wires. This configuration, coupled with replaceable cable options, ensures not just exceptional sound transmission but also durability and adaptability to personal listening preferences.

The storage case made of “paulownia wood”
Finally, the SR-X9000 is presented in an exquisite paulownia wood storage case, chosen for its thermal and humidity regulation properties. This case not only protects but also enhances the longevity and performance of these exceptional earspeakers.

Embrace the heritage and experience the future of audio with the STAX SR-X9000 earspeakers, where the legacy of sound meets the pinnacle of auditory craftsmanship.

Specifications

●Type:push-pull electrostatic large circular sound element, open-air type enclosure
●Electrode:MLER-3
●Frequency response:5 – 42,000Hz
●Electrostatic capacitance:110pF (including cable)
●Impedance:145kΩ (including cable, at 10kHz)
●Sound pressure sensitivity:100dB / input 100Vr.m.s. / 1kHz
●Bias voltage: DC580V
●Right/left channel indication: Golden solid line (left) and dotted line (right) on the cable
●Earpad: Genuine leather (skin touching portion), high-quality artificial leather (surrounding portion)
●Cable: Silver-coated 6N (99.9999%) OFC parallel 6-strand, low-capacity special wide cable, 2.5m、1.5m
●Weight:432g (without cable)