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2012 Audi A4

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 2012 Audi A4

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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Wet Sounds Sinister-SDX2500

2500W RMS Class D Sinister Series Monoblock Marine Amplifier with Bass Remote

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2500W RMS Class D Sinister Series Monoblock Marine Amplifier with Bass Remote

• 1000 watts x 1 channel @ 4 ohm
• 1700 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 4 ohm Stable Monoblock Marine Amplifier

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$2,099.99

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Ships in 10-14 days

• 1000 watts x 1 channel @ 4 ohm
• 1700 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 4 ohm Stable Monoblock Marine Amplifier

Wet Sounds REV 12 HD XZ-W GRILLE

Grilles for Wet Sounds REV 12 Marine Tower Speakers (XZ White)

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Grilles for Wet Sounds REV 12 Marine Tower Speakers (XZ White)

• 12" XZ-style grilles for REV 12 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

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$165.00

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• 12" XZ-style grilles for REV 12 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

Wet Sounds REV10HDXS-BGRILLE

Grilles for Wet Sounds REV 10 Marine Tower Speakers (XS Black)

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Grilles for Wet Sounds REV 10 Marine Tower Speakers (XS Black)

• 10" XS-style stainless steel grilles for REV 10 HD tower speakers
• Made with rugged plastic and stainless steel inlay
• Includes (2) speaker grilles and (8) allen head screws

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$210.00

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Ships in 10-14 days

• 10" XS-style stainless steel grilles for REV 10 HD tower speakers
• Made with rugged plastic and stainless steel inlay
• Includes (2) speaker grilles and (8) allen head screws

Wet Sounds ZERO 12 SUB KIT-S2

800W Peak (400W RMS) Loaded Single 12" Sealed Marine Enclosure

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800W Peak (400W RMS) Loaded Single 12" Sealed Marine Enclosure

• Sealed enclosure with 1 12" Zero Series Subwoofer
• 400 watts RMS (800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 14" H x 8.81" W x 5.71" W2

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$1,029.99

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Ships in 10-14 days

• Sealed enclosure with 1 12" Zero Series Subwoofer
• 400 watts RMS (800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 14" H x 8.81" W x 5.71" W2

Limited time!

Wet Sounds Wet Wire 2 AMP KIT - FRONT (WW-2 AMP KIT - FRONT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper Dual Marine Amplifier Power Wiring Kit

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1/0-gauge and 4-gauge 100% Oxygen Free Copper Dual Marine Amplifier Power Wiring Kit

• Dual Front Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 10 ft. 1/0-gauge and 10 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

15% off an NVX XCAP10H w/ Select Amp Kits
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List price $599.99
-27% $439.99

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Ships in 10-14 days


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• Dual Front Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 10 ft. 1/0-gauge and 10 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

Wet Sounds ADPFT-TOP-PLATE-W

Adapter Brackets for Fiberglass T-Top Mounts (White)

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Adapter Brackets for Fiberglass T-Top Mounts (White)

• Mounting brackets for fiberglass T-top mounts
• Works with REV8X, REV8SC, REV10X, and REV10SC
• Equipped with large wiring openings to accept wiring for LED tower lighting
• Includes (2) brackets, white speaker top plates, and screws

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List price $172.99
-13% $149.99

Available

Ships in 10-14 days

• Mounting brackets for fiberglass T-top mounts
• Works with REV8X, REV8SC, REV10X, and REV10SC
• Equipped with large wiring openings to accept wiring for LED tower lighting
• Includes (2) brackets, white speaker top plates, and screws

Wet Sounds AR-5DEFLTDDRHNG

Replacement Rear Door Hinges for AR-5 Defender MAX Limited

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Replacement Rear Door Hinges for AR-5 Defender MAX Limited

• Replacement rear door hinges for AR-5 Defender Max Limited
• Designed for vehicle models with full rear doors
• Easy and simplified installation

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$259.99

Available

Ships in 10-14 days

• Replacement rear door hinges for AR-5 Defender Max Limited
• Designed for vehicle models with full rear doors
• Easy and simplified installation

Wet Sounds REVO 10 XW-W GRILLE

Grille for Wet Sounds 10" REVO 10 Marine Subwoofers (White)

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Grille for Wet Sounds 10" REVO 10 Marine Subwoofers (White)

• 10" White closed style grille for REVO 10 marine subwoofers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

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$54.99

Available

Ships in 10-14 days

• 10" White closed style grille for REVO 10 marine subwoofers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

Wet Sounds REVO 10 XW-B GRILLE

Grille for Wet Sounds 10" REVO 10 Marine Subwoofers (Black)

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Grille for Wet Sounds 10" REVO 10 Marine Subwoofers (Black)

• 10" Black closed style grille for REVO 10 marine subwoofers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

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$54.99

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Ships in 10-14 days

• 10" Black closed style grille for REVO 10 marine subwoofers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

Wet Sounds REVO 10 SW-B GRILLE V3

Grille for Wet Sounds 10" REVO 10 Marine Subwoofers (Black)

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Grille for Wet Sounds 10" REVO 10 Marine Subwoofers (Black)

• 10" Marine Subwoofer Grille
• Black SW grille design
• REVO 10 marine subwoofers sold separately

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$59.99

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Ships in 10-14 days

Like New from: $50.99

• 10" Marine Subwoofer Grille
• Black SW grille design
• REVO 10 marine subwoofers sold separately

Wet Sounds RGB CONNECTOR KIT V5

5-Piece RGB Connector Kit for Wet Sounds RGB LED Systems

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5-Piece RGB Connector Kit for Wet Sounds RGB LED Systems

• RGB Connector Kit for Wet Sounds RGB LED Systems
• Includes 5 RGB slice and 5 RGB connectors

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$20.99

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Ships in 10-14 days

• RGB Connector Kit for Wet Sounds RGB LED Systems
• Includes 5 RGB slice and 5 RGB connectors

Wet Sounds REVO 8 XS-G-SS GRILLE

Grille for Wet Sounds 8" REVO 8 Marine Subwoofers (Gray)

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Grille for Wet Sounds 8" REVO 8 Marine Subwoofers (Gray)

• 8" Gray open style grille for REVO 8 marine subwoofers
• Made with stainless steel for enhanced durability
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

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$64.99

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Ships in 10-14 days

Used from: $38.99

• 8" Gray open style grille for REVO 8 marine subwoofers
• Made with stainless steel for enhanced durability
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

Wet Sounds REVO 12 SW-B GRILLE

Grille for Wet Sounds 12" REVO 12 Marine Subwoofers (Black)

REVO 12 SW-B GRILLE big
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Grille for Wet Sounds 12" REVO 12 Marine Subwoofers (Black)

• 12" Black closed style grille for REVO 12 marine subwoofers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

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$69.99

Available

Ships in 10-14 days

• 12" Black closed style grille for REVO 12 marine subwoofers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

Wet Sounds REVO 12 XS-B-SS GRILLE

Grille for Wet Sounds 12" REVO 12 Marine Subwoofers (Black)

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Grille for Wet Sounds 12" REVO 12 Marine Subwoofers (Black)

• 12" Black open style grille for REVO 12 marine subwoofers
• Made with stainless steel for enhanced durability
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

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$109.99

Available

Ships in 10-14 days

• 12" Black open style grille for REVO 12 marine subwoofers
• Made with stainless steel for enhanced durability
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

Wet Sounds REVO 12 XS-G-SS GRILLE

Grille for Wet Sounds 12" REVO 12 Marine Subwoofers (Gunmetal)

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Grille for Wet Sounds 12" REVO 12 Marine Subwoofers (Gunmetal)

• 12" Gunmetal open style grille for REVO 12 marine subwoofers
• Made with stainless steel for enhanced durability
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

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$109.99

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Ships in 10-14 days

• 12" Gunmetal open style grille for REVO 12 marine subwoofers
• Made with stainless steel for enhanced durability
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

Wet Sounds REVO 12 ADP XZ-W Grille Kit

Grille Kit for Wet Sounds 12" REVO 12 Marine Subwoofers (White)

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Grille Kit for Wet Sounds 12" REVO 12 Marine Subwoofers (White)

• 12" Marine Subwoofer Grille Kit
• White XW grille design
• REVO 12 marine subwoofers sold separately

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$99.99

Available

Ships in 10-14 days

• 12" Marine Subwoofer Grille Kit
• White XW grille design
• REVO 12 marine subwoofers sold separately

Limited time!

Wet Sounds Wet Wire High Power 4 AMP KIT (WW-HP 4 AMP KIT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Amplifier Rear High-Power Wiring Kit

WW-HP 4 AMP KIT big
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1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Amplifier Rear High-Power Wiring Kit

• Rear High Power Marine Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

15% off an NVX XCAP10H w/ Select Amp Kits
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List price $1499.99
-17% $1,249.99

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Ships in 10-14 days


Available Deal
WW-HP 4 AMP KIT main
Offer may end without notice

Eligible items

Shop items below for 15% off up to $100 discount on Get 15% off an NVX XCAP10H


• Rear High Power Marine Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

Limited time!

Wet Sounds Wet Wire 2 AMP KIT - REAR (WW-2 AMP KIT - REAR)

1/0-gauge and 4-gauge 100% Oxygen Free Copper Dual Marine Amplifier Power Wiring Kit

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1/0-gauge and 4-gauge 100% Oxygen Free Copper Dual Marine Amplifier Power Wiring Kit

• Dual Rear Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 10 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

15% off an NVX XCAP10H w/ Select Amp Kits
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VIP Product Get $67.00 in rewards to spend later

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List price $799.99
-16% $669.99

In stock

Only 2 Left!


Available Deal
WW-2 AMP KIT - REAR main
Offer may end without notice

Eligible items

Shop items below for 15% off up to $100 discount on Get 15% off an NVX XCAP10H


• Dual Rear Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 10 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

Wet Sounds WWX-RGB-RSV3

Single Zone RGB LED Lighting Controller Rocker Switch

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Single Zone RGB LED Lighting Controller Rocker Switch

• Single zone RGB LED lighting controller rocker switch
• Standard carling-style opening mount
• Features (2) preset buttons to store favorite settings
• Include LED backlit buttons to keep visibility at night
• Control of lighting color, music, and fade settings

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$139.99

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• Single zone RGB LED lighting controller rocker switch
• Standard carling-style opening mount
• Features (2) preset buttons to store favorite settings
• Include LED backlit buttons to keep visibility at night
• Control of lighting color, music, and fade settings

Wet Sounds ADP Nautique Z5 Drop 12

Drop Down Brackets for Z5 Cargo Rack with 12" Strut Tube

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Drop Down Brackets for Z5 Cargo Rack with 12" Strut Tube

• Drop down bracket for the Z5 racket with 12" strut tube
• Works with REV8X, REV8SC, REV10X, and REV10SC
• Large wiring openings to accept multiple wiring for LED Tower Lighting

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$239.99

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Ships in 10-14 days

• Drop down bracket for the Z5 racket with 12" strut tube
• Works with REV8X, REV8SC, REV10X, and REV10SC
• Large wiring openings to accept multiple wiring for LED Tower Lighting

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    FAQ for Universal-Fit Audio & Electronics in 2012 A4

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2012 Audi A4?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your A4.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.