Audi A6 C8 — Subwoofer Menu Activation (MIB3)

Finally hear what your A6's subwoofer can actually do — independent slider next to Bass in the MMI.

€50

One-time · Permanent VIN-verified Same-day confirmation

What You Get

Audi A6 C8 trims with Audi Sound System (PR-9VD) leave the showroom with only Bass and Treble exposed in the MMI, even though every car has a subwoofer playing under the rest of the system. There's no way to balance it from inside the cabin, so long-distance listening sessions end up sounding fine at one volume and muddy at another. This activation unhides the dedicated Subwoofer menu through a guided, VIN-specific OEM workflow in RetroLab Pro, with no dealer visit, no remote coding, and no manual scripts.

How It Changes Behavior

From factorythe C8 MMI only shows Bass and Treble. The subwoofer is doing real work in the cabin, but you can't see it or adjust it anywhere in the Sound menu.

After activationa dedicated Subwoofer slider appears next to Bass in the MMI Sound menu, so you can dial the low end back during quiet motorway cruising or push it forward when the music actually deserves it.

100% OEM integration
Unlocks the hidden Subwoofer slider in MMI Sound
Independent control of Bass and Subwoofer levels
Consistent low-end across motorway and city driving
1-Click activation through the RetroLab Pro app
Guided, VIN-specific OEM activation workflow

Requirements

Audi A6 C8 Sedan / Avant (2018–2023)
Audi Sound System (PR-9VD) — 10 speakers with subwoofer
MIB3 MMI infotainment system
Windows PC + ENet cable, or iPhone 15/16/17 + USB-C LAN adapter

Compatibility Notes

Not supported: vehicles with the Bang & Olufsen 3D sound system
Not supported: A6 C8 Avant TFSI-e (plug-in hybrid) — the high-voltage battery occupies the subwoofer location, so no sub is fitted
Not supported: A6 C8 without the Audi Sound System (PR-9VD) option
Not supported: A6 C7 or earlier generations
Not supported: model year 2024+ vehicles