MOST Fibre optic interface to allow the fitting of a new head unit into a BMW with the TOP HI FI SYSTEM (Logic 7/ Harman Kardon) original audio and retain the use of the fibre optic amplifier.
You will lose front to rear fading ability.
PLEASE NOTE: if the car has speaker wiring in the Quadlock connector then it is NOT a fibre-optic amplified system and this interface is not needed.
Works with the following cars:
What Is 'TOP HIFI'?
Premium Sound (known internally to BMW as "TOP HIFI") relates to any BMW premium sound system branded as:
Brand: InCarTec
Car models: The years stated refer to the model's years of manufacture, please check the item description for information about any changes there may be within these productions years.
BMW - 1 series (E81/E82/E87/E88) (2004 - 2010 )
BMW - 3 series (E90/E91/E92/E93) (2006 - 2011)
BMW - X5 (E70) (2007 - 2013)
© Copyright 2026 InCarTec. All Rights Reserved
