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

The CTX-3304 Optic Fiber Decoder makes it possible to connect an aftermarket Android car radio to the original Bose sound system in your Porsche in a neat and hassle-free way. Thanks to this decoder, which uses the original fiber optic connection, you do not need to run cables through the car to the trunk.

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

This optic 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 from the amplifier to the speakers via the fiber optic cable into a usable signal for an aftermarket radio. This keeps the original speakers and amplifier fully active, while the audio source is replaced by your new car radio.

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

Connection & Installation

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

Installation is technically simple but requires basic knowledge of car systems. The decoder is supplied with clear labels for connection.

This product is only needed in combination with Bose. If you do not have an original premium audio system, the CTX-3304 is not required.

Frequently Asked Questions (FAQ)

Do all original speakers work with the CTX-3304?
Yes, all original speakers remain fully operational via the fiber optic 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.

Is the original amplifier retained?
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 link.

Is the decoder suitable for every Porsche?
No, only 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 suitable for all common aftermarket Android car radios with RCA audio output.

Important to know

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