The Porsche PCCM products are designed by Krämer Automotive:
https://www.kraemerautomotive.com
https://www.kraemerautomotive.com/en/products/
Krämer Automotive is a supplier for Porsche. But they also offer their products as retrofit systems for JLR, Mercedes and other companies.
Their products are made in China. So same thing as Apple.
Sound quality will not improve massively. This is more an amps and loudspeaker chassis and crossover, EQ and time alignment problem.
Hybrid Mode
