Mr12Volt P600 MOST Fibre Optic Bluetooth Adapter Interface for Audi MMI 2G Basic & High - A4 A5 A6 A8 Q7 (2002-2009) - Music Streaming & Hands-Free Calling - USB/microSD/AUX - OEM Plug & Play Retrofit

Wireless audio and hands‑free calling for Audi MMI 2G via MOST optical network

Part number: P600

Give your Audi a modern connectivity boost while keeping the cabin looking factory fresh. The Mr12Volt P600 integrates directly with the car’s fibre‑optic MOST bus for outstanding, CD‑like clarity and rock‑solid reliability. Stream music from your phone, take calls through the car speakers and control everything from the original MMI controls and steering buttons. We run this kit ourselves and our customers consistently praise how OEM it looks, feels and sounds.

Enjoy wireless music from apps such as Spotify, Apple Music, Deezer, YouTube and podcasts, plus hear navigation prompts through your existing speakers. No head unit swap. No dashboard clutter. Just a neat retrofit that works with your MMI 2G system the way it should.

Vehicle compatibility

• A4 B8 8K: 2008 to 2009 with MMI 2G Basic or High
• A5 8T: 2007 to 2009 with MMI 2G Basic or High
• A6 C6 4F: 2004 to 2009 with MMI 2G Basic or High
• A8 D3 4E: 2002 to 2009 with MMI 2G Basic or High
• Q7 4L: 2005 to 2009 with MMI 2G Basic or High

Why this retrofit is a winner

• Direct link to the optical ring for high‑fidelity sound without alternator whine or hiss
• Operate music and phone functions using the original rotary controller and steering controls
• Hands‑free calling through the factory audio system with supplied external microphone
• Wireless music streaming from popular apps and your phone’s library
• Play from USB flash drives and microSD cards up to 32 GB (MP3 and WMA)
• 3.5 mm AUX input for additional sources
• Track and menu browsing with text on supported MMI units
• USB power output for light device charging up to 300 mAh

Compatibility notes

• MMI 2G Basic with a 6‑disc changer: the changer must be fully disconnected during installation
• Phone book access is available on MMI 2G High only, not on MMI 2G Basic
• Software level required: MMI 2G Basic 0410 or later, MMI 2G High 3450 or later. Dealers can update if needed

Not sure which MMI you have

Use this quick guide to identify your MMI version

Storage support

• FAT16 or FAT32 file systems
• Capacity up to 32 GB
• Audio formats: MP3 and WMA

What you receive

• Mr12Volt P600 main module
• Fibre‑optic MOST Y‑harness
• External microphone with 270 cm cable
• 3.5 mm AUX lead
• 2 x Scotch Lock connectors

Installation and fitting

The P600 connects into the factory MOST loop for a tidy, seamless integration that keeps everything looking original. Confident DIYers can follow the guides below. Prefer a professional install

MJ Modifications offers fitting at our Warwickshire workshop. Request a quote: info@mjmodifications.co.uk

• P600 installation video
• Download the P600 user manual

Trusted by enthusiasts

We have fitted and tested this kit in‑house and with customer vehicles across A4, A5, A6, A8 and Q7 platforms. Feedback is consistently positive for call clarity, sound quality and effortless control via the original interface. It is the smart way to add modern phone connectivity to MMI 2G without changing the head unit.

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