Porsche is taking automotive audio technology into new territory with a production-ready amplifier based on gallium nitride (GaN) semiconductor technology. Developed in collaboration with the University of Stuttgart, the new system promises to make Porsche’s high-end Burmester audio setup lighter, more compact and more efficient without sacrificing the powerful sound that has become a hallmark of premium sports cars.

The technology will make its production debut in a future Porsche vehicle in 2027, marking what Porsche describes as the world’s first production-ready high-end automotive audio system using gallium nitride technology.

At the heart of the development is a GaN-based high-performance chip responsible for the voltage conversion needed to operate the 400-watt subwoofer amplifier. While that might sound like a relatively small technical change, the implications are significant: GaN semiconductors can switch at higher frequencies and operate with lower losses than conventional silicon devices, allowing engineers to extract more performance from a smaller and lighter package.

Porsche Turns Semiconductor Technology Into an Audio Advantage

For Porsche, the motivation goes beyond simply making an amplifier smaller.

The company says powerful bass is an important part of the emotional experience expected from its vehicles, particularly its sports cars. The Burmester 3D High-End Surround Sound System is therefore being used as a showcase for technology that could eventually find applications far beyond audio.

“A powerful bass foundation is part of the emotive experience our customers expect from a Porsche,” says Steffen Burosch, responsible for audio system innovations at Porsche’s Weissach Development Centre. “Sound in a Porsche is about pure emotion.”

The introduction of gallium nitride technology could allow Porsche to deliver that experience while reducing the physical and thermal demands of the audio hardware.

According to Porsche, the new GaN technology makes the power conversion process significantly more efficient than an equivalent silicon-based system. Less energy is lost as heat, which reduces the amount of cooling required and opens the door to a more compact amplifier design.

The Porsche GaN Amplifier Is About More Than Weight

One of the biggest advantages of gallium nitride is its ability to reduce losses during high-frequency switching.

Traditional silicon transistors have been the foundation of automotive power electronics for decades. GaN devices, however, have material properties that allow them to switch faster while producing less energy loss. That combination can be particularly valuable in applications where electrical power must be converted efficiently.

In Porsche’s new audio system, the reduced heat generation means the amplifier does not require as much cooling capacity. The company says the heat sink can be approximately 20 percent lighter, while other passive components, including capacitors and inductors, can also be reduced in size.

The result is a high-performance subwoofer amplifier that is both lighter and more compact.

For a conventional luxury vehicle, saving weight in an audio system might not appear particularly important. For Porsche, however, every kilogram matters.

Reducing the mass of components can contribute to the broader engineering goals of a sports car, where efficiency, packaging and weight reduction remain critical considerations.

Less Aluminum, Lower Production Emissions

Porsche also sees an environmental benefit in the new amplifier design.

Because the GaN-based system generates less heat, it requires a smaller heat sink. That means less aluminum is needed for its construction. Since aluminum production is highly energy-intensive, reducing the amount of material used in the amplifier can also help lower the carbon emissions associated with manufacturing it.

This gives the technology a dual advantage: improved performance and reduced material requirements.

It is an approach that reflects a broader trend in the automotive industry, where efficiency is increasingly being measured not only by vehicle energy consumption but also by the size, weight and resource requirements of individual components.

From University Research to a Production Porsche

Porsche began exploring the use of gallium nitride in automotive applications in mid-2023.

Starting in spring 2024, Porsche engineers specializing in audio, semiconductors and sustainability joined forces with researchers at the Institute for Robust Power Semiconductor Systems at the University of Stuttgart.

The goal was to solve one of the fundamental problems associated with high-performance automotive electronics: converting electrical power efficiently while operating under the demanding conditions of a sports car.

The development team subsequently produced the first prototype of a GaN-based subwoofer amplifier.

“We focused on the fundamental technical challenges of efficient voltage conversion. In a sports car, efficiency and weight are crucial factors,” explains Dr. Lars Heuken, Porsche’s head of Strategic Semiconductor Management.

The project eventually expanded to include a leading international semiconductor manufacturer and an audio development partner. Together, the companies were able to transform the prototype into a production-ready system.

Porsche has also filed several patent applications covering innovations developed during the project.

What Is Gallium Nitride and Why Does Porsche Want It?

Gallium nitride is a semiconductor material that became widely known through its use in blue LEDs during the 1990s. Since then, GaN technology has expanded into numerous applications, including compact smartphone chargers, high-performance power supplies and even space-based systems.

Its biggest advantage in power electronics comes from its switching characteristics.

GaN transistors can operate at higher switching frequencies than conventional silicon transistors while also producing lower switching losses. This means less electrical energy is converted into unwanted heat during power conversion.

For engineers, that creates a chain reaction of benefits.

Less heat means less cooling.

Less cooling means smaller heat sinks.

Smaller heat sinks and higher switching frequencies can allow passive components to shrink.

And smaller components can ultimately produce a lighter and more compact electronic system.

That is precisely the opportunity Porsche is exploiting with its Burmester audio system.

Why GaN Could Be Especially Important for Electric Porsches

Perhaps the most interesting aspect of Porsche’s announcement is not the audio system itself.

The company believes gallium nitride could eventually play a much larger role in its future vehicles, particularly in electric sports cars.

“GaN is ideal wherever power is converted,” says Heuken. “Many fields of application are conceivable in Porsche sports cars and we are investigating them in more detail.”

That could include high-voltage systems used in Porsche’s electric vehicles.

Electric cars depend heavily on power electronics to convert, control and distribute electrical energy. Battery systems, inverters, onboard chargers and other high-voltage components all require sophisticated power conversion.

If GaN can deliver the same benefits at significantly higher power levels, Porsche could potentially use the technology to create smaller, lighter and more efficient components throughout an electric vehicle.

The audio amplifier is therefore potentially just the beginning.

The 2027 Porsche GaN Debut Could Be a Bigger Deal Than It Sounds

Porsche has not yet revealed which production model will receive the GaN-based Burmester amplifier first.

What is clear is that the technology is scheduled to enter production in 2027, giving Porsche a significant opportunity to establish itself as an early adopter of gallium nitride in automotive applications.

The first implementation is relatively modest in scope: a 400-watt subwoofer amplifier.

But its importance lies in what happens next.

Automotive engineering is increasingly focused on achieving more performance from fewer materials and smaller components. GaN fits neatly into that philosophy. Porsche can potentially deliver powerful audio performance while reducing amplifier weight, cooling requirements and packaging volume.

And if the technology proves reliable in the demanding environment of a Porsche sports car, its applications could eventually extend into the vehicle’s electrical architecture.

Porsche’s Next Step in High-Tech Performance

The new Burmester amplifier demonstrates an increasingly important reality of modern performance-car development: innovation is no longer limited to engines, suspension systems or aerodynamics.

Semiconductors are becoming just as important.

Porsche’s adoption of gallium nitride technology shows how a material originally associated with LEDs and consumer electronics can be adapted for a demanding automotive environment. The immediate result is a lighter and more compact high-end audio amplifier, but the long-term potential could be much greater.

For Porsche customers, the first benefit will be something they can hear: powerful, precise sound from the Burmester 3D High-End Surround Sound System.

For Porsche engineers, however, the more exciting benefit may be something they cannot hear at all—the possibility of using GaN technology to make future vehicle electronics smaller, lighter and more efficient.

As Porsche’s Burosch puts it, the company sees further opportunities in automotive audio and is already defining the next areas of application.

The 2027 debut could therefore represent not the end of Porsche’s GaN experiment, but the beginning of a much broader semiconductor strategy.

Source: Porsche