Fiber Optic MOST 150 Adapter for Audi/Mercedes/Porsche/VW/Volvo

This Fiber Optic(MOST 150) adapter allows you to retain the factory Audi/Bentley/Mercedes-Benz/Porsche/Skoda/Volkswagen/Volvo MOST 150 amplifier audio system when installing ANY aftermarket radios. In addition, the output from all speakers includes a subwoofer and premium sound quality. This makes for a nice clean, easy install.

When installing this interface into your vehicle, you must ensure that the fiber optic signal loop is not broken. In addition, if you have other devices, including the original CD Changer, satellite radio, and telephone module, they must consistently stay connected to the fiber optic signal loop.

To identify if you have a fiber optics MOST factory amplified audio system, you can check the vehicle in several ways. Some vehicles will have clear markings on the speaker grills indicating the presence of an upgraded audio system. You can also check with the original order notes/invoice from when the car was purchased from the factory. The upgraded sound system with an amplifier would show on the options list. If unsure, you can call your local dealer with your vehicle's chassis number and ask them to check if the car was manufactured with an amplified audio system. If you are unsure, please send the VIN and a photo of your car's existing dashboard to us and we will help you check.

Compatible vehicles:

Audi A3 2015-2021 MIB, MIB HS, MIB2 
Audi A4 2017-2021 MIB, MIB HS, MIB2 
Audi A5 2017-2020 MIB, MIB HS, MIB2 
Audi A6 2017-2021 MIB, MIB HS, MIB2 MIB2.5 
Audi A7 2017-2021 MIB, MIB HS, MIB2  MIB2.5 
Audi A8 2017-2021 MIB, MIB HS, MIB2, MIB2.5
Audi Q3 2015-2020 MIB, MIB HS, MIB2 
Audi Q5 2018-2020 MIB, MIB HS, MIB2 
Audi Q7 2017-2021 MIB, MIB HS, MIB2, MIB2.5 
Audi Q8 2019-2021 MIB2.5 
Audi R8 2017-2021 MIB, MIB HS, MIB2 
Audi S3 2015-2020 MIB, MIB HS, MIB2 
Audi S4 2017-2020 MIB, MIB HS, MIB2 
Audi S5 2017-2020 MIB, MIB HS, MIB2 
Audi S6 2017-2021 MIB, MIB HS, MIB2, MIB2.5 
Audi S7 2017-2021 MIB, MIB HS, MIB2, MIB2.5 
Audi S8 2019-2021 MIB2.5 
Audi TT 2016-2021 MIB, MIB HS, MIB 2
Bentley Bentayga 2017-2020 Bentayga MIB 2 
Bentley Continental 2019-2020 Bentayga MIB 2 
Mercedes-Benz 2015-2020 NTG 5
Porsche 911 Carrera 2017-2021 PCM4.0 
Porsche Boxster 2017-2021 PCM4.0 
Porsche Cayenne 2019-2021 PCM5.0 
Porsche Cayman 2017-2020 PCM4.0 
Porsche Macan 2017-2021 PCM4.0 
Porsche Panamera 2017-2021 PCM4.1
Skoda Kodiaq 2016-2020 MIB, MIB2
Skoda Octavia 2016-2020 MIB, MIB2
Volkswagen Gti 2014-2021 MIB, MIB2
Volkswagen Golf VII 2014-2018 MIB, MIB2
Volkswagen Tiguan 2017-2020 MIB, MIB2
Volkswagen Teramont 2016-2020 MIB, MIB2
Volvo XC90, XC60, XC40 2018

Connection map

1. Positive of battery(usually the yellow wire from the aftermarket head unit main harness).
2. GND(usually, it is the black wire from the aftermarket head unit main harness).
5. ACC wire(usually, it is the red wire from the aftermarket head unit main harness).
21. Connects to the negative of the Front left audio output of the aftermarket head unit(line output, not RCA output).
22. Connects to the positive of the Front Left audio output of the aftermarket head unit(line output, not RCA output).
23. Connects to the negative of the Front Right audio output of the aftermarket head unit(line output, not RCA output).
24. Connects to the positive of the Front Right audio output of the aftermarket head unit(line output, not RCA output).
The original car's fiber optics cable plugs into the fiber optics plug.

Frequently asked questions:

Q.  Can I return this for a refund if I do not like it?
A:  NO. We warranty the product for one year. If there are any problems with it, we will replace it with a new one for you.

Q.  Why are there only TWO inputs?
A:  It only supports stereo input from your front Left and Front Right audio output.

Q.   If it only uses TWO audio cables, how will I get sound from all of my speakers?
A:  The MOST interface will convert the TWO audio signals into a fiber optic signal your factory amplifier can understand. Your Harman Kardon/BOSE/Dynaudio amplifier will distribute sound to your speakers, including your subwoofer.

Q.  Can I control fade and balance after this is installed?
A:  You can control only LEFT RIGHT balance since it only uses those two audio cables. No fading from Front to back.

Q.  Does this support steering wheel button controls?
A:  This does not add or remove the steering wheel button control. It only has one function: to convert audio into a fiber optic signal the factory amplifier can understand.