Mr12Volt Audi A4, A5, A6, A7, A8, Q5, Q7 - MMI 2G High CarPlay & AA Interface

2026 NEW & UPDATED

MR12volt Audi Bluetooth Audio & Handsfree Interface for MMI 2G / MMI 3G

With Advanced Bluetooth Codec Support: SBC / AAC / APTX / APTX HD

Introduction

Modern Bluetooth Connectivity for Your Factory Audi MMI System.

The MR12volt P800AU is a Bluetooth audio streaming and handsfree calling interface designed specifically for Audi vehicles equipped with MMI 2G Basic, MMI 2G High and MMI 3G / 3G+ systems.

Engineered for direct integration with the original factory audio system, the P800 provides wireless Bluetooth music streaming and handsfree calling while fully retaining the OEM appearance and factory controls of your Audi.

Supporting advanced Bluetooth audio codecs including SBC, AAC, APTX, and APTX HD, the P800 provides significantly improved wireless audio quality, lower latency, and a more refined listening experience compared to conventional Bluetooth adapters.

Key Features

• Bluetooth Music Streaming
• Bluetooth Handsfree Calling
• Direct MOST Fiber Optic Integration
• Full Digital Audio Transmission
• Superior Audio Quality Compared to FM / AM Modulators & AUX Adapters
• OEM Steering Wheel Control Support
• Plug & Play Installation

Advanced Bluetooth Codec Support

• SBC
• AAC
• APTX
• APTX HD

Compatible Audi Systems

Compatibility Radio & Sound Systems

• Audi MMI 2G Basic / MMI 2G High
• Audi MMI 3G / 3G+
• Compatible with Base, BOSE & Bang & Olufsen Sound Systems

Compatible Vehicle

• Audi A4 (8K | MMI 2G / MMI 3G)
• Audi A5 (8T | MMI 2G / MMI 3G)
• Audi A6 (4F / 4G | MMI 2G / MMI 3G)
• Audi A7 (4G | MMI 3G)
• Audi A8 (4E / 4H | MMI 2G / MMI 3G)
• Audi Q5 (8R | MMI 3G)
• Audi Q7 (4L | MMI 2G / MMI 3G)

Installation & Compatibility Notes

Audi MMI 2G High

• MR12volt operates through the factory CD changer menu.
• No OEM CD changer is required.
• Required software version: SW Version 3450 or later.

Audi MMI 2G Basic

• Vehicles equipped with factory CD changer must have the OEM CD changer removed and replaced by the MR12volt P800.
• Phone book function is not supported.
• Required software version: SW Version 0410 or later.

Audi MMI 3G / 3G+

• MR12volt operates through the factory media source menu.
• No coding is required.
• If an OEM CD changer is installed, it must be bypassed during installation.

Bluetooth Music Streaming

Wirelessly stream music directly from your smartphone through the factory Audi audio system.

Compatible with:

• Apple Music
• Spotify
• YouTube Music

What is APTX?

APTX is a Bluetooth audio technology designed to improve wireless music sound quality.

Compared to standard Bluetooth audio, APTX can provide:

• Clearer vocals
• Better bass response
• Cleaner overall sound quality
• Lower audio latency

For APTX to function, both the smartphone and the MR12volt P800AU must support APTX codec compatibility. Otherwise, the system will automatically use standard Bluetooth audio transmission.

In simple terms, APTX helps wireless Bluetooth music sound significantly closer to wired audio quality, especially when paired with premium OEM sound systems.

Package Contents

• MR12volt P800 Interface Module
• Power Harness
• External Microphone
• Installation Accessories
• User Instructions

Why Choose MR12volt?

MR12volt products are designed specifically for OEM integration, allowing users to modernise their vehicle without compromising the original interior design or factory user experience.

The P800 provides a clean and factory-style Bluetooth upgrade solution for Audi owners seeking improved wireless audio quality and handsfree calling functionality while retaining the original OEM head unit.