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1990 Audi Coupe Quattro

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 1990 Audi Coupe Quattro

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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4 Pack of 100 Amp Nickel-Plated MANL Fuse (Belva BMANL100)

Four fuses per order. High quality 100 Amp MANL Fuses

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Four fuses per order. High quality 100 Amp MANL Fuses

• 100A MANL Fuse (4 Pack)
• Nickel Plated for Better Power Transfer
• Resealable Polybag
• Heavy Duty Construction

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List price $8.99
-56% $3.99

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• 100A MANL Fuse (4 Pack)
• Nickel Plated for Better Power Transfer
• Resealable Polybag
• Heavy Duty Construction

Rockford Fosgate Punch Pro PP4-NT (Sold Individually)

100W Peak (50W RMS) 1" Punch Series 4-ohm Pro-Audio Horn Tweeter

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100W Peak (50W RMS) 1" Punch Series 4-ohm Pro-Audio Horn Tweeter

• 1” Aluminum Pro Audio Horn Tweeter
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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$149.99

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• 1” Aluminum Pro Audio Horn Tweeter
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

Dual MANT16B

16" Marine AM/FM Antenna with Swivel Base and 54" Cable (Black)

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16" Marine AM/FM Antenna with Swivel Base and 54" Cable (Black)

• Marine stereo AM/FM antenna with flexible mast
• Includes 180° swivel base and 54" antenna cable
• Made with durable steel and corrosion-resistant rubber cover

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$19.99

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Ships in 10-14 days

• Marine stereo AM/FM antenna with flexible mast
• Includes 180° swivel base and 54" antenna cable
• Made with durable steel and corrosion-resistant rubber cover

Scosche Tuneshare IUHPS

3.5 mm to 3.5 mm Headphone Audio Splitter

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3.5 mm to 3.5 mm Headphone Audio Splitter

• 3.5 mm to 3.5 mm Headphone Audio Splitter
• Allows for two people to listen to one audio source at once
• Length: 4.56" / 0.38 ft

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• 3.5 mm to 3.5 mm Headphone Audio Splitter
• Allows for two people to listen to one audio source at once
• Length: 4.56" / 0.38 ft

JBL Stage 122 (JBLSUBST122AM)

1000W Peak (250W RMS) 12" Stage Series Single 4-ohm Car Subwoofer

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1000W Peak (250W RMS) 12" Stage Series Single 4-ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 6"
• Sensitivity: 91 dB

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List price $129.95
-15% $109.95

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Only 2 Left!

Cobra SC250R

3" Dual View 4K High-Definition Dash Camera with Bluetooth, WiFi and GPS

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3" Dual View 4K High-Definition Dash Camera with Bluetooth, WiFi and GPS

• 3" Dual View Dash Camera with 4K HD Video Resolution
• Includes a rear-view accessory camera
• Apple CarPlay and Android Auto support
• Loop-cycle recording
• Front Camera Resolution: 4096p x 2160p
• Rear Camera Resolution: 1920 x 1080p

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$259.95

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• 3" Dual View Dash Camera with 4K HD Video Resolution
• Includes a rear-view accessory camera
• Apple CarPlay and Android Auto support
• Loop-cycle recording
• Front Camera Resolution: 4096p x 2160p
• Rear Camera Resolution: 1920 x 1080p

NVX NE151P

Single 15" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 3.50 Cu. Ft. with Polyfil and NVX Logo

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Single 15" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 3.50 Cu. Ft. with Polyfil and NVX Logo

• 15" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 3.50 cubic feet
• Premium Black Carpet with Black NVX Logo

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List price $179.99
-17% $149.99

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Stinger SSGLI

Select Series Ground Loop Isolator

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Select Series Ground Loop Isolator

• 2-Channel Ground Loop Isolator
• Eliminates Noise and Static

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• 2-Channel Ground Loop Isolator
• Eliminates Noise and Static

Stinger SSVLP0BL

50 ft. 1/0 Gauge Power Wire (Matte Blue)

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50 ft. 1/0 Gauge Power Wire (Matte Blue)

• 50 feet 1/0 gauge Power Wire
• CCA (Copper-Clad Aluminum) material
• Ultra flexible CCA cable construction
• Color: Matte Blue

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List price $269.00
-37% $169.00

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• 50 feet 1/0 gauge Power Wire
• CCA (Copper-Clad Aluminum) material
• Ultra flexible CCA cable construction
• Color: Matte Blue

Limited time!

NVX NDA11005

2200W Peak (1100W RMS) Class D N-Series 5-Channel Car Amplifier with Bass Remote

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2200W Peak (1100W RMS) Class D N-Series 5-Channel Car Amplifier with Bass Remote

• 100 watts x 4 channel + 315 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 1100 watts
• Class D 2 ohm Stable 5-Channel Amplifier

Save 30% off an NVX XKIT46 Amp Kit at Checkout!
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NVX XKIT46

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BOYO Vision VTSR220 (Open Box, Great)

Front and Rear Parking Assist System with 8 Parking Sensors (Black)

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Front and Rear Parking Assist System with 8 Parking Sensors (Black)

• Front and rear parking sensors with waterproof connectors
• Audible buzzer with volume adjustment
• Total Number of Sensors: 8
• Detection Distance: 1 feet to 5.9 feet

10% Off Open Box!
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List price $121.00
-51% $58.79
$52.91 with coupon | Price details

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• Front and rear parking sensors with waterproof connectors
• Audible buzzer with volume adjustment
• Total Number of Sensors: 8
• Detection Distance: 1 feet to 5.9 feet

JL Audio 12TW3-D4

400W RMS 12" TW3 Series Dual 4-ohm Shallow Subwoofer

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400W RMS 12" TW3 Series Dual 4-ohm Shallow Subwoofer

• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Rubber Surround
• Mount depth: 3.5"
• Sensitivity: 84.11 dB

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JL Audio XD-RPW60A-100 Power Wire (Red)

100 Ft. of 60A Oxygen Free Copper Power Wire (Red)

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100 Ft. of 60A Oxygen Free Copper Power Wire (Red)

• 60 Amp capacity
• Pure OFC Copper
• Compact strand orientation and high strand count
• Soft, flexible PVC Jacket

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$449.99

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Only 2 Left!

• 60 Amp capacity
• Pure OFC Copper
• Compact strand orientation and high strand count
• Soft, flexible PVC Jacket

Sundown Audio U-6.5SW D4 6.5" (U65SWD4)

1000W Peak (500W RMS) 6.5" U Series Dual 4-ohm Car Subwoofer (SW-UV16.5D4)

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1000W Peak (500W RMS) 6.5" U Series Dual 4-ohm Car Subwoofer (SW-UV16.5D4)

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 5.71"
• Sensitivity: 78.14 dB

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-17% $199.99

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MTX 5510-44

800W Peak (400W RMS) 10" 55 Series Dual 4-ohm Car Subwoofer

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800W Peak (400W RMS) 10" 55 Series Dual 4-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.625"
• Sensitivity: 83.5 dB

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Stinger SPT5503

PRO Series Classic Banana Plug Dual Terminal w/ Shoc-Krome Plating and Black Plastic Clip (1/pack)

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PRO Series Classic Banana Plug Dual Terminal w/ Shoc-Krome Plating and Black Plastic Clip (1/pack)

• Accepts Up To 8 Gauge
• Dual Red Molded Design
• Compression Style Connection
• Expandable Quick Connection
• Shoc-Krome Plating

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• Accepts Up To 8 Gauge
• Dual Red Molded Design
• Compression Style Connection
• Expandable Quick Connection
• Shoc-Krome Plating

NVX XVRC2

Universal Remote Level Controller/Bass Knob with Digital Voltmeter

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Universal Remote Level Controller/Bass Knob with Digital Voltmeter

• NVX Remote Level Controller with Digital Voltmeter
• Can adjust the amplifier gain even while driving
• In-dash or Under-dash mountable
• Compatible with most head units/amplifiers combinations
• Blue LED display (high voltage / low voltage)

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Used from: $23.09

• NVX Remote Level Controller with Digital Voltmeter
• Can adjust the amplifier gain even while driving
• In-dash or Under-dash mountable
• Compatible with most head units/amplifiers combinations
• Blue LED display (high voltage / low voltage)

Kicker L7XS121 (52L7XS121)

3000W RMS 12" SoloXS L7XS Series Dual 1-ohm Square Car Subwoofer

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3000W RMS 12" SoloXS L7XS Series Dual 1-ohm Square Car Subwoofer

• RMS Power: 1500 - 3000 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 10-1/8"

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List price $1499.99
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• RMS Power: 1500 - 3000 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 10-1/8"

Heise HE-BD50

480W Universal 50” Blackout Series Dual Row 96 LED Light Bar

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480W Universal 50” Blackout Series Dual Row 96 LED Light Bar

• Universal 50" Double Row LED Light Bar
• Water-resistant IPX-67 Rating
• Flood/Spot Combo Beam Pattern
• Integrated epoxy-encapsulated electronics
• Includes rear/side brackets and mounting hardware

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List price $1027.99
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• Universal 50" Double Row LED Light Bar
• Water-resistant IPX-67 Rating
• Flood/Spot Combo Beam Pattern
• Integrated epoxy-encapsulated electronics
• Includes rear/side brackets and mounting hardware

Limited time!

NVX XUBT4 Universal Bluetooth Receiver and Remote Control

X Series Marine Grade Bluetooth Audio Controller/Receiver with Membrane Switchpad for Cars, Trucks, Motorcycles, ATVs & Boats (X-Series)

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X Series Marine Grade Bluetooth Audio Controller/Receiver with Membrane Switchpad for Cars, Trucks, Motorcycles, ATVs & Boats (X-Series)

• Marine Grade Bluetooth Audio Controller/Receiver
• Designed for marine and powersports applications
• Bluetooth version 4.0
• Delivers CD-like sound quality wirelessly
• Membrane Switchpad

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• Marine Grade Bluetooth Audio Controller/Receiver
• Designed for marine and powersports applications
• Bluetooth version 4.0
• Delivers CD-like sound quality wirelessly
• Membrane Switchpad

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    FAQ for Universal-Fit Audio & Electronics in 1990 Coupe Quattro

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1990 Audi Coupe Quattro?

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

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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.