DA-G2.Standard MOST150 Coaxial Mercedes Preamp


The mObridge DA-G2.Standard MOST150 pre-amplifier provides a connection between the in-vehicle MOST150 infotainment system with any aftermarket analog/digital DSP/amplifier.

It provides 10 channels of RCA analog outputs, a TOSLINK output, and an amplifier turn on/off control. Multi-vehicle compatibility is provided via DIP switches, and a USB connection can be used to connect it to the mObridge DSP user interface for configuration and firmware updates.

The DA-G2.Standard MOST150 also allows adjustment of the mono sinks such as Phone, Navigation, PDC and Voice recognition to compensate for OEM systems that may need adjustment. The DA-G2.Standard also allows the mono sink channels to bypass the time buffering to avoid delays and issues such as echo cancellation and delayed reverse park beeps.

The DA-G2.Standard MOST150 does not contain advanced DSP controls beyond what the vehicle provides, such as bass, treble, fade, and balance. For a complete DSP solution, with advanced DSP algorithms, the DA-G2.Pro MOST150 coax can be used. Where only basic TOSLINK outputs are required, the DA-G2.Entry MOST150 coax can be used.


The DA-G2.Standard MOST150 Coaxial has been specifically designed for Mercedes-Benz vehicles to interface seamlessly into the vehicle bus network for unprecedented control and audio reproduction.

Blackfin DSP

The heart of the device is a 533MHz Blackfin Digital Signal Processor (DSP). The DA-G2.Standard MOST150 Coaxial allows for channel summing, channel mapping and mono channel volume controls only. It does not contain any advanced DSP processing beyond what the vehicle controls provide such as bass, treble, balance and fade etc.


The pre-amp stage is driven by a Burr Brown DAC converter, providing an audiophile quality without compromise.

Seamless Integration

The DA-G2.Standard MOST150 Coaxial interfaces seamlessly with the controls of the vehicle. Volume, fade, balance, bass, and treble remain completely controllable via the existing vehicle controls, and all factory audio such as parking sensors, navigation, voice, and telephone are integrated to behave exactly as per the original system. This means that unlike other integration options, there is no need for mounting of any additional controls inside the vehicle. The vehicle will look and feel stock, with exceptional audio quality.

mObridge DSP User Interface

The DA-G2.Standard MOST150 Coaxial utilizes the mObridge DSP desktop application for Windows/macOS to harness the full potential of the DSP. The application is also able to provide automatic online firmware updates.


Note: This product is only compatible with Mercedes-Benz vehicles equipped with MOST150 Coaxial audio systems.


Model Generation Configuration Year
A Class Small Car (W177/V177/Z177) NTG6.x MBUX 2018+
B Class Small Car (W247) NTG6.x MBUX 2019+
C Class Small Car (W206) NTG6.x MBUX 2021+
CLA Class Sports Coupe (C118) NTG6.x MBUX 2019+
CLC Class Compact SUV (X254) NTG6.x MBUX 2022+
CLS Class Sports Coupe (C257) NTG6.x MBUX 2018+
E Class E Class (W213/C238/A238/S213) NTG6.x MBUX 2020+
GLA Class SUV (H247) NTG6.x MBUX 2020+
GLB Class SUV (X247) NTG6.x MBUX 2019+
GLE Class SUV (W167) NTG6.x MBUX 2019+
GLS Class SUV (X166) NTG6.x MBUX 2020+
S Class Saloon (W223) NTG7.x MBUX 2020+
SL Class Coupe/Convertible (R232) NTG7.x MBUX 2022+
Analog Outputs
  • 10 channels RCA full-range
  • 4V RMS
  • 192kHz Sampling 24-bit digital to analog converter (DAC)
Digital TOSLINK Output
  • Stereo TOSLINK output
Vehicle Interface
  • Support for volume/fade/balance on factory radio and/or steering wheel
  • Support for all factory-fitted audio sources (eg telephone/navigation/voice recognition/television/dvd) (where applicable)
  • Support for reverse park sensor audio overlay (where applicable)
  • Support for factory multi-band equalizer (where applicable)
  • Wiring harness
  • 8x RCA plug adapter
  • DA-G2 MOST150 coax Mercedes instructions
Documents Firmware Updates