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The Euridiche is a result of years and years of Research and Development, keeping in focus to reach the experience of real music, without any compromise. We found that the only way is an open-type electrostatic headphone. Now with Euridiche, with the biggest membrane surface used in headphones, and with all these Soltanus Acoustics innovations, you have the full concert feeling, like in a real concert hall, similar to huge and very expensive loudspeakers, but with much more fine details and privacy.

Design innovations

  • Sectioned two-way stator design with several advantages (Euridiche and Euridiche 3D):
    – With a built-in switch, the tonality of the headphones can be regulated in 3 steps, depending on your preference, record, and used system, in the high-frequency band. (1KHz and above)
    – This configuration gives you a real 3D sound field because the high-frequency content is focused from the front side of the membrane to your ears, and not from the center as it usually is, on the headphones.
  • Air Flow stator matrix design gives you possible minimal air turbulence during air motion through them. The segments are aerodynamically designed, like the wings of airplanes. This way we can eliminate all of the harshness caused by any other perforated type of stators.
  • The segments of the stator matrix are focused backward directly on your ears, to create a sound stage like a live orchestra in the concert hall, or the loudspeakers in your listening room.
  • Easily changeable membrane capsule, for lifetime durability of our product. The only thing in the electrostatic driver that can be damaged over years, is the extremely thin membrane. The owner can change them easily without soldering, just with a few screws. That is the reason why the screws aren’t hidden.
  • Standard XLR/mini XLR connectors for easy cable change and easier storage.


Our standpoint in designing the manufacturing processes is, to keep the principles and materials which have been proven over time, combined with the newest scientific approach.

From hand-sewn genuine Italian leather parts, through laser cutting, to the newest 3D printing technology, all parts are carefully hand-assembled.

Why 3D printing?

  • The newest 3D printing technology gives a precise, repeatable, durable product, ideal for high-quality low mass production.
  • Also ideal for Research and Development, both for new, and for existing products.
  • Possible manufacturing, extremely lightweight and strong peaces, hollowed out inside. This is important for your comfort during long listening sessions.
  • Parts with this complexity can’t be manufactured by other technologies.
  • We use high-performance biopolymer made from renewable resources. The material is fully biodegradable and compostable.
The high frequency response above 1KHz is adjustable in 3 positions, +2/0/-2dB with built is switch, without crossover and any phase distortion.
The built in 3 pin mini XLR connector allows an easy wire disconnecting from your Euridiche headphones, for cable changing or easier storaging.
The 2 microns thin and extremely large (104mm) membrane is easily changeable by it’s user. No need for any soldering. The large surface of the membrane allows even the infra sound reproduction and the low mass an uninterrupted ultrasound reproduction, specific only to exceptional electrostatic type of transducers.
The Euridiche stators are developed by using rigid OCC copper wires for extremely detailed sound and smooth frequency response, from infra to ultrasound range. The huge open area percentage, the smooth surfaces and the rigid construction specify the excellent behaviour of this transducer.
The newly invented Soltanus Acoustics, two-part, segmented headphone stator creates a real 3D sound field. The high frequency content is focused from the front side of the membrane to your ears, not from the center like on the headphones usually. This way the headphone creates a sound stage infront of you and not across your head.
Hand crafted genuine leather ear pads and head band are built in for good humidity handling during listening sessions to prevent any unpleasant or allergic reaction.
The lightweight enclosure is 3D printed from high performance biopolymer, made from renewable resources. The material is fully biodegradable and compostable. So after the lifetime of the product, it leaves a minimal ecological footprint. The energy needed for manufacturing these parts is several times less than for the parts made of metal, or even plastics by injection molding.

Electrostatic Headphone Driver Unit

With the Soltanus Acoustics Electrostatic Headphone Driver unit we ensure the required High-Voltage audio signal necessary for the electrostatic headphones.
The design is the most simple and robust as possible, with high-quality built-in materials to match the outstanding electrostatic sound quality.
This device with its uncolored sound leaves you the freedom in choosing the amplifier or headphone amplifier just to your taste.
There are no additional unnecessary electronics integrated, only the two audio transformers and a simple power supply to make the signal path absolutely simple.
Our Audio step-up transformers are wounded by hand to ensure the highest quality in the high-frequency range and use extremely oversized cross-section cores, which enables high impedance and outstanding low-frequency reproduction.
The housing is made from solid 6mm and 3mm aluminum alloy sheets, preventing vibrations or generating any eddy currents by transformers.
The housing can be used vertically, to use it as a headphone stand, and horizontally too, as usual.

Specifications Headphone


Push-Pull Open Back, Circular, Two Way, Adjustable Electrostatic Headphone


Segmented Rigid Wires


2 microns thin, 104mm in diameter, easy changeable capsule

Frequency Response

from infra to ultra sound range

Electrostatic Capacitance

90pF (including cable)


177kΩ (including cable, at 10kHz)

Sound Pressure Sensitivity

97dBC/100V RMS 1kHz

Maximum Sound Pressure


Bias Voltage

580V DC

Left & Right Identification

“L” and “R” indicated inside the arc assembly.

Ear Pads/Head Band

Genuine Italian Lamb Leather


Silver-coated OFC


498g without cable

Specifications Electrostatic Headphone Driver Unit


High voltage Step Up Transformer Driving Unit for Electrostatic Headphones

Maximum Output Voltage

600V RMS

Frequency Response

up to 40KHz


100Ohms at 20Hz

Bias voltage



227mm x 227mm x 76mm




Custom Binding Posts


3 Pin XLR x 2, Stax 5 Pin connectors

Maximum Input Voltage



230V or 115V AC max 100mA