The GLADEN SoundUp BMW S676-BASIC is a plug-and-play sound upgrade designed specifically for BMW models with the optional 676 factory-fitted hi-fi sound system. It is designed for drivers who want to significantly enhance their standard hi-fi system's sound quality without making costly modifications or interfering with the vehicle's wiring.

It focuses specifically on the front system. The front speakers are semi-actively controlled for more precise and cleaner voice and instrument reproduction. The rear speakers are not controlled by an amplifier, which reduces complexity, installation time, and costs without compromising sound quality for the driver.

Thanks to vehicle-specific plug-and-play integration, the kit can be quickly and cleanly installed and removed without leaving any traces. The original wiring harness remains untouched, and all components are precisely matched to the BMW audio architecture of the F and G models. This makes the set ideal for leased vehicles or drivers looking for an uncomplicated sound upgrade.

The result is a clearly structured, balanced sound that significantly surpasses the standard sound without costly modifications or complex system settings.