Built-in ActivationAudi A7 C8 — Subwoofer Menu Activation (MIB3)
The A7 Sportback cabin deserves a proper bass mix — this activation gives you the slider Audi hid.
What You Get
Audi A7 C8 Sportback trims with Audi Sound System (PR-9VD) leave the factory with only basic Bass and Treble controls in the MMI. The subwoofer is wired and active inside the long Sportback cabin, but the sub level itself is fixed and can't be balanced against the main bass anywhere in the Sound menu. This activation switches on the hidden Subwoofer slider through a guided, VIN-specific OEM workflow in RetroLab Pro — no dealer visit, no remote coding, no manual scripts.
How It Changes Behavior
From factorythe A7 Sportback MMI only exposes Bass and Treble. The subwoofer plays a critical role in the long, glass-heavy fastback cabin, but you can't see it or tune it from the Sound menu.
After activationa dedicated Subwoofer slider sits next to Bass in MMI Sound, letting you compensate for the Sportback's longer cabin and reflective glass — push the sub forward, or reign it in for late-night cruising.
- 100% OEM integration
- Unlocks the hidden Subwoofer slider in MMI Sound
- Independent control of Bass and Subwoofer levels
- Tailored low-end for the A7 Sportback's longer cabin
- 1-Click activation through the RetroLab Pro app
- Guided, VIN-specific OEM activation workflow
Requirements
- Audi A7 C8 Sportback (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: A7 C8 without the Audi Sound System (PR-9VD) option
- Not supported: A7 4G (previous generation)
- Not supported: model year 2024+ vehicles
Compatible Variants
A7 C8 Sportback, S7, RS7 — with MIB3 + Audi Sound System
How It Works
Submit your VIN — we verify compatibility
One-time payment after we confirm your car
Connect via ENet cable, follow the guided steps
