Campaign Story

The First Glass Planar Drivers – A New Direction for Headphone Technology

For more than a year, I have been researching and developing a completely new type of headphone driver: a planar magnetic driver built based on an ultra-thin glass membrane.

Traditional planar drivers use plastic films such as PET or Kapton. These materials work well, but they also impose physical limitations in stiffness, stability, and long-term behaviour. My goal is to explore whether ultra-thin flexible glass can push planar driver performance further.

If successful, this project will create the world’s first headphones using a glass planar driver.

This crowdfunding campaign will fund the next stage of development: building and refining working prototypes, improving manufacturing techniques, and completing the final headphone design.

Why Glass?

Traditional planar drivers rely on plastic membranes. While plastic offers flexibility and durability, it also introduces compromises in stiffness, dimensional stability, and long-term mechanical behaviour.

Ultra-thin glass provides a radically different set of properties:

1. Extremely High Stiffness Glass has a Young’s modulus roughly 20–30× higher than common plastics used in planar drivers. This allows the membrane to remain far more rigid during motion. Potential advantages:
   • More piston-like movement
   • Lower harmonic distortion
   • More accurate transient response
2. Mechanical Stability Plastics can deform over time due to heat, humidity, and mechanical stress. Glass is far more stable:
   • Minimal thermal expansion
   • No moisture absorption
   • No long-term creep deformation

This could result in drivers that remain acoustically consistent for a long time.

1. Ultra-Smooth Surface for Conductors Ultra-thin glass substrates offer an extremely smooth surface, enabling very thin conductive traces to be deposited with high precision. Possible benefits:
   • More consistent electrical paths
   • More precise driver geometry
   • Improved manufacturing accuracy
2. High-Frequency Potential A stiffer diaphragm resists bending, which can help it move more uniformly at higher frequencies instead of deforming. This may allow the driver to reproduce:
   • Better high-frequency performance
   • Wider usable bandwidth

Possible Challenges

This project is experimental, and glass also brings new challenges:

• Higher density than plastic, which increases moving mass
• Lower internal damping, which may introduce resonances that must be carefully controlled
• Greater manufacturing complexity, as ultra-thin glass is more difficult to handle
• More complicated shipping.
• Injury prevention in case the driver breaks

These challenges are exactly why extensive prototyping and precise measurements are necessary.

A Modular, Repairable Headphone Alongside the driver, the headphones are being designed with a philosophy:

easy repair and long-term usability.

The goal is a design that can be opened and serviced without a single screwdriver.

Key features include:

• Modular components
• Snap-fit mechanical assembly
• Replaceable drivers and ear pads
• Minimal use of permanent adhesives

This approach should significantly extend the usable life of the headphones.

Current Prototype Results and Future Improvements

The latest glass planar driver prototype has already delivered promising results. Testing shows it can reproduce extremely low frequencies with a flat response down to approximately 10 Hz, confirming that the basic motor structure and membrane movement work as intended.

However, high-frequency performance is not yet optimal and shows some irregularities. Improving the upper range will be the main focus of the next prototype iterations. At this early stage, it is difficult to predict the exact limits of the design,only continued experimentation and measurement will reveal its full potential.

Development Timeline

Research and experimentation on the glass driver concept has already taken more than one year. Two prototypes have been built and measured  the conductor thickness, driver geometries, and acoustic performance.

The next phase will focus on refining the design and producing stable prototypes ready for final headphone integration. The goal is to complete the driver and headphone design before the end of 2026.

I deliberately choose a conservative and realistic timeline. Developing a completely new driver involves unexpected challenges and multiple iterations. It is better to promise a longer time frame and deliver earlier than to set unrealistic expectations.

Target Specifications (Prototype Goals)

These are early development targets and may evolve as testing continues.

• Driver type: Planar magnetic
• Membrane material: Ultra-thin flexible glass
• Conductor material: Copper traces deposited on glass
• Driver diameter: 111 mm
• Frequency response target: 10 Hz – 20 kHz

Design goals: low distortion, fast transient response, wide bandwidth, and long-term mechanical stability.

What the Funding Will Support

This campaign will fund the next development stage:

1. Driver Prototyping Multiple iterations of glass drivers to refine conductor patterns and acoustic behaviour.
2. Measurement Equipment More precise tools for acoustic and electrical measurements.
3. Advanced 3D Printing Improved equipment for housings, prototype frames, and modular headphone parts.
4. Software and Design Tools Specialised software for acoustic modelling, mechanical simulation, and driver optimisation.

Why Support This Project?

This project explores a completely new direction in headphone driver design. If successful, glass planar drivers could deliver new acoustic characteristics, exceptional long-term stability, and a fresh approach to planar engineering.

Every contribution directly supports the experimentation and prototyping needed to turn this concept into a finished product.

The Vision

The goal is simple: create the world’s first practical glass planar headphone driver and a headphone designed to last.

Development is ongoing, and every prototype brings the design closer to completion. With your support, the project can reach a finalized design before the end of 2026.

Glass planar magnetic driver will be shown on HIGH END VIENNA 2026 in startup area.

A Personal Note

For more than a year, I have been developing this technology entirely on my own. Every prototype, experiment, and measurement has been self-funded. The process has not been easy.

It has involved failures, complications, and repeated redesigns. It has demanded a significant amount of time, energy, and personal resources, both physically and mentally.

Up to this point, all development has been independent, without external funding or institutional support.

Support from this campaign will allow the project to move from solo experimentation to a more stable development phase, enabling better prototypes, more precise measurements, and faster progress.

I am fully committed to transparency. If unexpected problems arise or the timeline needs to be adjusted, I will communicate openly and as early as possible. Supporters are not only backing a product — they are supporting genuine research into a new driver technology.

This entire project and my small business exist because of my passion for creating and exploring new ideas in audio. On a personal level, the project is dedicated to the memory of my father, Vladislav Mlynek (1959–2023), who supported and believed in my work until the very end. His encouragement remains one of the main reasons I continue.

Thank you for helping make this possible.

Viliam Mlynek

To protect the innovation, the glass planar driver technology is currently patent pending.