Mercedes Benz B200 MOST Box Car Stereo Optical Fiber Decoder

Introducing the Mercedes Benz B200 MOST Box Car Stereo Optical Fiber Decoder from EzoneTronics. This compact 12 V module preserves your vehicle’s premium audio experience while enabling modern connectivity. Built for the B200 lineage, it keeps your original Bose or Harman Kardon system alive through its optical interface, even as you upgrade or customize your head unit.

What makes this decoder stand out is its purpose-built compatibility with MOST fiber audio networks. It decodes the optical signal without forcing you to replace or bypass the factory amplifier, so you enjoy seamless sound with your existing setup. The result is clean installation with excellent sound quality and fewer headaches during wiring. The device ships ready for plug-and-play integration and is designed to minimize the need for long cables running from the front of the car to the trunk—the cables connect upfront, saving time and reducing complexity.

Functionality at a glance: decode Bose or Harmon Kardon systems via the optical interface to maintain OEM amp performance while enabling modern head-unit options.

Benefits & Tips

• Preserve your factory Bose or Harman Kardon amplifier while upgrading the head unit for better media playback and modern inputs.
• Save on installation costs with a plug-and-play approach and front-end wiring—no need for long 6-meter rear cables.
• Practical tip: If you’re unsure whether your vehicle will support installation, take a photo of your radio setup and share it with us for quick confirmation.

Product specifications

• Brand name: EzoneTronics
• Model Name: XYH-LZ-MOST25-01
• Item Type: Cables, Adapters & Sockets
• Item Size: 7.4 x 5.5 x 2.5 cm
• Item Weight: 0.82
• Material: Gold plated + copper wire + plastic box
• Voltage: 12 V
• Function: Decode Bose or Harman Kardon with optical interface
• Origin: Mainland China

Package includes:

• 1 x MOST Box Optical Fiber Decoder
• 1 x Black plug
• 1 x Plastic protective cover for the plug
• 1 x Factory fiber optic interface connector
• 1 x B+ GND cable
• 1 x Audio cable

Warnings / Reminders

• Installation varies by vehicle model; please verify compatibility before purchase.
• No need to run long cables from front to rear—front-end connections are sufficient for many setups.
• Follow the installation steps: remove the black plug, attach the factory fiber optic interface to the plug, reinsert into the decoder box, then connect the B+ GND and audio cables to the head unit.

Language support

Language support: English and Spanish.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

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