Porsche’s August 21, 2026 announcement points to an interesting change inside premium factory audio: gallium nitride, or GaN, in the power supply.
What changes?
Developed with the University of Stuttgart, the voltage converter supplies a 400-watt subwoofer amplifier in the Burmester 3D High-End Surround Sound System. Porsche plans a production debut in a future vehicle in 2027.
Compared with conventional silicon, GaN supports higher switching frequencies and lower switching losses. Less waste heat means less cooling hardware. Porsche says the heat sink can be about 20% lighter, with smaller passive components. That percentage describes the heat sink, not the entire amplifier.
The takeaway for audio enthusiasts
Watch the packaging story as closely as the wattage figure. This announcement describes a planned factory application; it is not an aftermarket amplifier launch or a listening-test result.
Conceptual illustration, not a photograph of Porsche or Burmester hardware.
