
Porsche 986 / 996 MOST Fibre Optic Amplifier Retention Interface
- 1 Year Warranty
Porsche MOST Fibre Optic Amplifier Retention Interface
MOST fibre optic interface designed to retain the use of the original fibre optic amplifier in Porsche Boxster or 911 to allow the fitting of an aftermarket radio upgrade.
The interface connects at the back of the radio, it takes the phono audio output from the new radio and converts it to a digital signal that works with the original fibre optic amplifier. Note, the front to rear fade feature will be lost.
Vehicle compatibility:
- Boxster (986) with fibre optic amplifier
- 911 (996) with fibre optic amplifier
This interface includes speed pulse and reverse signal output.
To identify the amplifier, check under the bonnet (front storage) and the amplifier should be visible and look similar to the below image. If the amplifier has the 2 orange cables going into one connector (on the left in the image) then this is a fibre optic connection and will require this interface.
To adjust out any external noise from the system we recommend that this part is used in conjunction with our two channel RCA ground loop isolator 20-290-2CHP.
Product Compatibility Chart
Make | Model | Variations | Years | Radio | Notes |
Porsche | 911 |
996 (1998 - 2001) | 1996 - 2004 | Please see notes below | |
Porsche | 911 |
996 FL (2001 - 2005) | 1996 - 2004 | Please see notes below | |
Porsche | Boxster |
986 (1996 - 2004) | 1996 - 2004 | Please see notes below |
Porsche MOST Fibre Optic Amplifier Retention Interface
NOTE: This solution is compatible with vehicles fitted with BOSE amplified audio system.
If you are unsure about compatibility at anytime, please contact us via the ask a question link at the top of this page or telephone us and we will gladly assist you.

Factory fitted In-car Infotainment systems and their wiring can be complex, so we always recommend that you have your installation carried out by a qualified installer. If you wish, Car Communications can arrange for your after market audio installation at an address of your choice anywhere in the UK. Please select from addons options above before adding the purchase to your cart. During the checkout process you will be asked for your preferred date(s) and time for the installation.
For added peace of mind, our products can be professionally installed at your home or workplace anywhere in the UK by our qualified and accredited network of engineers.
NOTE: This solution is compatible with vehicles fitted with BOSE amplified audio system.
To adjust out any external noise from the system we recommend that this part is used in conjunction with our two channel RCA ground loop isolator 20-290-2CHP.