I-SOTEC Auto/KFZ Digital Plug & Play Upgrade Soundsystem (Subwoofer+Endstufe) kompatibel für OPEL Crossland/Grandland X : Amazon.nl: Electronics & Photo
ESX Auto Verstärker Endstufe SXE250.4 4x 150W
Audison 1000W Class-D 3/5-Kanal Power Endstufe Bass Boost Auto-On LPF HPF Sub | eBay