Premium sound for premium cars...
The basic speaker setup in BMW vehicles does not meet the expectations of ambitious music lovers in many cases. For all those, the tailor-made STEG UPGRADE speaker systems offer the perfect alternative that opens new horizons of sound.
The BM25 tweeter UPGRADE kit is specially designed for the original mounting locations of the vehicle and the components are equipped with vehicle-specific coded connectors. Likewise, the sound has been tuned for the interior of Mercedes vehicles.
Detailed sound improvement
Thanks to the 25 mm silk dome and the highly efficient neodymium magnet, the tweeters impress with fantastic precision, resolution and neutrality, as you would expect in a premium car.
Especially in combination with one of our DSP amplifiers, these speakers reveal their full sound quality potential.