CTX-3304 | Optic Fiber decoder | Porsche Cayenne | Boxster | Cayman | 911

The CTX-3304 Optical Fiber Decoder makes it possible to connect an aftermarket Android car radio to the in a neat and hassle-free manner original Bose sound system in your Porsche. Thanks to this decoder, which uses the original fiber optic (optical) connection, you don't have to run cables through the car to the trunk.

This way, you retain the original amplifier and speakers, while still being able to enjoy the latest infotainment features of an aftermarket car radio.

This optical fiber decoder is suitable for:

Porsche Boxster (2005 to 2011)
Porsche Cayman (2004 to 2011)
Porsche Cayenne (2003 to 2010)
Porsche 911 (2005 to 2011)

✅ Only suitable for vehicles with Bose audio via fiber optic (MOST system)

How does the car radio fiber optic decoder work?

The CTX-3304 converts the digital audio signal running via fiber optics from the amplifier to the speakers into a usable signal for an aftermarket radio. This allows the original speakers and amplifier to remain fully active, while the audio source is replaced by your new car radio.

This way, you can seamlessly switch to Android, CarPlay, or other modern systems without any modifications to the original wiring.

Connect & Installation

You can usually recognize the fiber optic connection by the orange cable behind the original factory radio. The CTX-3304 It is placed behind the aftermarket radio and connected directly to the car radio and the orange fiber cable. No cables need to be run to the amplifier in the trunk.

The installation is technically simple, but requires basic knowledge of car systems. The decoder comes with clear connection labels.

This product is only needed in combination with Bose. Don't have an original premium audio system? Then the CTX-3304 is not necessary.

Frequently Asked Questions (FAQ)

Do all original speakers work with the CTX-3304?
Yes, all original speakers continue to function fully via the fiber optic (optical) channel.

Can I control each speaker individually?
No. Control is via a single shared fiber optic channel. Individual speaker control per channel is not possible.

Will the original amplifier be kept?
Yes, the original Bose amplifier remains fully active.

Do I need to run cables to the trunk?
No, that is not necessary. The connection is made entirely behind the radio via the fiber optic connection.

Is the decoder suitable for every Porsche?
No, exclusively for the mentioned models with Bose and MOST fiber optic system.

Can I connect any aftermarket car radio with this?
Yes, the CTX-3304 is compatible with all common aftermarket Android car radios with an RCA audio output.

Important to know

This article is only necessary when your Porsche is equipped with an original Bose audio system with fiber optic (MOST). Without this system, the decoder is not needed, and a standard connection simply works via speaker cables.