Audi Factory Subwoofer to RCA adapter – ENFIG-SUB2RCA

This harness connects to your factory subwoofer connection and provides a pair if speaker level RCA for an aftermarket amplifier.
If your amplifier does not take speaker level inputs a High to low converter will be needed.

All harnesses are 6 feet long

Compatible Cars

All information is based on US cars.  Sometimes Europe releases a car a year early.
Choose your car from the drop down.  Subwoofer locations and part numbers are used as reference.

A5/S5/RS5 2018-2025 

• Coupe
  • Premium Audio – Bang & Olufsen
    • 8W6 035 412 A – Rear Deck
  • Standard Audio – Radio is amplifier
    • 8W6 035 412 – Rear Deck
• Cabriolet
  • Premium Audio – Bang & Olufsen – Dual Subwoofers
    • 8W7 035 381 A (8W7 035 381 C) Left
    • 8W7 035 382 A (8W7 035 382 C) Right
  • Standard Audio – Radio is amplifier
    • 8W7 035 381  (8W7 035 381 B)
• SportBack – Standard Drive
  • Premium Audio – Bang & Olufsen
    • 8W9 035 382 E – 8W9 035 382 C
  • Standard Audio – Radio is amplifier
    • 8W9 035 382 D  – 8W9 035 382 B
• SportBack – Alternate Drive
  • Premium Audio – Bang & Olufsen
    • 8W1 035 382 A
  • Standard Audio – Radio is amplifier
    • 8W1 035 382

A6/S6 2019-2024

• Premium Audio – Bang & Olufsen
  • with Standard Drive System – 4K2 035 914 – Right Side Of trunk
  • with Alternative drive system – 4K0 035 914 – Spare Tire Subwoofer
  • with High-Voltage System – 4K8 035 914 – Wide Subwoofer against rear of trunk
• Advanced Audio – Separate Amplifier
  • with Standard Drive System – 4K2 035 913 – Right Side Of trunk
  • with Alternative drive system – 4K0 035 913 – Spare Tire Subwoofer
  • with High-Voltage System – 4K8 035 913 – Wide Subwoofer against rear of trunk
• Standard Audio – Radio is amplifier
  • with High-Voltage System – 4K0 035 915 – Spare Tire Subwoofer
  • with Alternative drive system – 4K8 035 915 – Wide Subwoofer against rear of trunk

Q8/SQ8/RSQ8 2019-2025

• Premium Audio – Bang & Olufsen
  • 4M8 035 621 B-
• Advanced Audio – Separate Amplifier
  • 4M8 035 621 B –
• Standard Audio – Radio is amplifier
  • 4M8 035 621
  • Requires Adapter ring- https://enfigcarstereo.com/product/audi-subwoofer-mounting-ring1/

Q5/SQ5 2025
B&O – Spare Tire Sub – 80A 035 382 A
NON B&O – Spare Tire Sub – 80A 035 382

Q5/SQ5 2025
B&O Style 1 Pinout 1432
NON B&O Style 4 Pinout 3200