The Stax SR-X9000 Flagship Electrostatic Earspeakers represent the pinnacle of Stax’s eighty-plus years of electrostatic audio innovation, delivering an unparalleled listening experience. As an open-air electrostatic design, the SR-X9000 employs an ultra-thin diaphragm, now 20% larger than its predecessor, driven by Stax’s revolutionary “MLER-3” (Multi-Layer-Elect-Rords) fixed electrodes. This advanced four-layer structure, combining metal mesh and etched electrodes, ensures extreme rigidity and flawless sound transmission, while a redesigned non-parallel guard mesh eliminates internal reflections for ultimate clarity.

Crafted with meticulous attention to detail, the SR-X9000 features machined aluminum enclosures, a robust stainless steel arc assembly, and plush genuine sheep leather earpads, offering both exquisite build quality and sublime comfort for extended listening. With a breathtaking frequency response from 5 Hz to 42,000 Hz, the SR-X9000 delivers astonishing speed, transparency, and a vast, holographic soundstage, complemented by newfound bass authority. It requires a dedicated electrostatic amplifier (energizer) and comes with two detachable high-purity cables and a luxurious paulownia wood storage case, solidifying its status as a true audiophile reference.

The diaphragm is made of ultra-thin super engineering plastic film. Due to weight saving close to zero, great transient characteristic is realized. From the base to the high range, the linearity of the sound is improved. The area of the diaphragm increases by 20% compared to SR-009S. This breakthrough realizes the widest sound field ever.

The enclosure of the sound unit is made of tough machined aluminum. This new design firmly fixes the sound unit and completely eliminates unnecessary vibrations. The sound wave from the unit flows more smoothly. The improved acoustic characteristic inside the enclosure realizes clearer sound unaffected by sound reflection.

The guard mesh which is installed parallel to the sound element generates the direct reflections which affect a bad influence on the sound. This problem is solved for SR-X9000. The guard mesh has pillars of different lengths in front and back. This design changes the height of the gap between the sound element and the guard mesh. So the guard mesh cannot be parallel to the sound element and the reflection angle is completely controlled. The sound wave flows smoothly.

The main material of the arc assembly is upgraded to stainless steel. The arc assembly is more tolerant to torsion and the earspeaker more stably fits your ears. The material of the head pad which directly contacts to the skin is genuine leather. The position can be adjusted by the slider parts with 9 step clicking system.

The material of the ear pads is genuine leather (sheep skin) which has excellent breathability and softness. Genuine leather makes the earspeaker 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.

The material of the core cable is a 6NCu ultra-pure annealed copper wire (φ0.14×3). The material of the around core cable is a silver plated annealed copper wire (φ0.08×９). So high and low frequency is improved. The cable can be changed (recable). 2 cables (2.5m and 1.5m) are attached and you can choose the cable according to your listening style. The storage case is made of “paulownia wood” which has low thermal conductivity and humidity control capacity. This case is the best storage solution.

Type: push-pull electrostatic sound element, open-air type enclosure
Sound element shape: large round shape　
Fixed electrode: MLER-3 (Multi Layer Electrodes)
Frequency response: 5 - 42,000Hz
Electrostatic capacitance: 110pF 　
Impedance: 145kΩ 　
Sound pressure sensitivity: 100dB　
Bias voltage: 580V DC
Attached cable conductor: 6N(99.9999%)OFC + silver plated annealed copper wire ●Cable: parallel 6-strand, low-capacity wide cable
Cable length:2.5m,1.5m
Ear pad: genuine sheep leather (skin touching portion), artificial leather (surrounding portion)
Weight: 432g (ear speaker)

Orders ship Sunday through Friday from our offices in Dubai, UAE.

In-stock products typically ship within 48 hours and should be expected to arrive in 3-4 business days. Orders outside of the UAE should be expected to arrive in 5-7 business days.

Pre-order and backorder products will state the approximate delivery timeline beside the Add To Cart button.

If you would like to place a custom order, chat with our specialists for a guided shopping experience. Once your order has been placed, a timeline will be provided depending on your order details.

- Free delivery within the UAE
- Shipping charges will be calculated upon checkout for orders outside of the UAE (Bahrain, Oman, Kuwait, Saudi Arabia & Qatar).
- Taxes and duties are calculated according to the applicable laws of the state or country an item is shipped to and are the customer's responsibility.

For additional information on shipping and our exchange & return policy visit our help center.

Installation charges are applicable and can be paid upon delivery for our clients based in Dubai.

- Installation Charges: AED 450 Per Hour
- Speaker Cables: AED 32 Per Meter
- Trunking: AED 10 Per Meter

For clients based outside of the UAE, please contact our specialists and we will share an estimate based on your requirements.