Shopping Cart (0)
Close
New
Audi MOST Bang & Olufsen B&O Sound Amplifier
Part with Component Protection
We can prepare an amplifier for your car and remove the component protection; you will simply need to send us your amplifier—even if it is damaged.
Additionally, we offer full repair services for existing units, including those with water damage. Repair costs for faulty units typically range from £150 to £650, depending on the extent of the damage. In our experience, repairing the original unit is often nine out of ten times less expensive than purchasing a replacement.
For a personalised quote, please contact us at info@vagtec.co.uk or via WhatsApp at +44 777 33 666 44.
⚠️ IMPORTANT NOTE:
This unit has Component Protection enabled. It requires removal by an authorized Audi dealership or an independent Audi specialist equipped with ODIS online functionality to activate all features in your vehicle.
Part number : 4M2035466 / 4M2 035 466
Part number : 4M2035466A / 4M2 035 466 A
Part number : 4M2035466B / 4M2 035 466 B
The 4M2035466 (including revisions 4M2035466A and 4M2035466B) is the BeoCore high-end infotainment radio amplifier manufactured by Harman/Lear for the Bang & Olufsen Premium and Advanced 3D Sound Systems.
While it shares an almost identical structural function and vehicle compatibility list with your previous part (4N0035466), 4M2 is a generation/platform variant specific to MIB3 (Modular Infotainment Matrix 3) architecture implemented across VAG vehicles from 2019 to 2026
⚡ Core Audio Performance Data
-
- Peak Output Power: Up to 1,920 Watts (Advanced 3D setups) or 705 Watts (Premium 3D setups depending on flash parameters).
- Continuous Power Output: ~1,330 Watts RMS at < 1% THD.
- Amplification Architecture: Multi-channel Class-D ICEpower® electronic circuit designed to drive low-impedance subwoofers safely without melting voice coils.
- Maximum Output Channels: Up to 23 discrete channels driving up to 23 speakers (including motorized dashboard acoustic lenses if present).
🎛️ Digital Signal Processing (DSP) & Technology
-
- Acoustic Environment Processing: Features localized Fraunhofer Symphoria® 3D technology, creating computational height, depth, and spatial distance sound-staging.
- Dynamic Equalization: Integrated Vehicle Noise Compensation (VNC) adjusting real-time EQ filters via internal microphone feedback to counter road noise.
- Infotainment Bus Compatibility: High-speed Automotive Ethernet / MIB3 Bus architecture. Unlike older generations that relied purely on MOST150 optical fiber, this coordinates with the MIB3 High main unit via unified digital network protocols.
- Diagnostic Designation: Control Module for Digital Sound Package (J525).
🛠️ Hardware & Technical Specs
- Chassis Design: Heavy-duty, die-cast aluminum passive heat-sink shell (completely sealed enclosure protecting against surface dust, but highly vulnerable to standing water).
- Supersessions & Revisions:
4M2035466(Original release)4M2035466A(First revision)4M2035466B(Current drop-in replacement that supersedes and fixes issues from older variants)
Compatible Vehicles
-
This amplifier fits the following vehicles equipped with Premium Audio (Option 9VS) or Advanced 3D Sound (Option 8RF):
-
- Audi Q7 / SQ7 (4M Facelift, 2020–2026)
- Audi Q8 / SQ8 / RSQ8 (2019–2026)
- Audi A6 / S6 / RS6 (C8 Generation, 2019–2026)
- Audi A7 / S7 / RS7 (4K Generation, 2019–2026)
- Audi A8 / S8 (D5 Generation, 2018–2026)
- Bentley Bentayga (Facelift, 2021–2026)
Package Contents:
- B&O Amplifier Unit
Brand Information
- Audi, Bentley
- A6, A7, A8, Q8, Bentayga
- A6 - 4A (2018-2024), A6 – FN (2025- ), A7 - 4K (2018 - ), A8 - 4N (2017 - ), Q8 - 4M (2019 - ), Bentayga 2015 >>
Special prices only for trade customers.
Reviews
There are no reviews yet.