Pioowirk Optic Fiber Decoder, Optical Audio Converter Most Box for Head Unit Replacement Car Stereo Radio Mercedes Benz E CLS SLK SL S CL Series W219 W211 W171 2003-2008

Decode for Harman Kardon with optical interface: Keep your original car's optic fiber amplifier for Harman Kardon system work. Compatible Vehicle Type: For Mercedes Benz NTG2.0 System, E(2002-2008) / CLS(2005-2008) / S(2004-2006) / SL(2005-2008 / SLK(2005-2008). If it is from 2009 onwards, please check out this ASIN: B0C33WX21R This adapter is a plug-and-play adapter required in vehicles which have original COMAND APS NTG2.0(MOST Bus Based Systems) system, it provides high-quality audio and video levels for your in-car entertainment needs. Please Note that this optical fiber decoder box can NOT decode the D2B Optical Bus System (COMAND2.0 & COMAND 2.5). And this optical fiber decoder box CAN decode your vehicles COMAND APS NTG 2.0 system information, please check your vehicles plug port. Or send a picture of the central control to the seller for confirmation. [VERY IMPORTANT NOTE!!!!!!]: Some car models require one or two fiber optic loop adapter. (The original car has more than TWO optical fiber interfaces.) Or please contact the seller for support. If there is no sound after installation, or sound occurs a few minutes after the console starts. you need to determine if the original car comes with the original car navigation, satellite box and CDC.