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2004 Audi S4

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 2004 Audi S4

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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Cerwin Vega P75T

300W Peak (100W RMS) 1" Pro Series 8-ohm Pro Audio Horn Tweeters

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300W Peak (100W RMS) 1" Pro Series 8-ohm Pro Audio Horn Tweeters

• 1" Polyimide Horn Tweeters
• 150 watts Peak Each
• 50 watts RMS Each
• 8 ohm Impedance

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List price $263.99
-17% $219.99

In stock.

• 1" Polyimide Horn Tweeters
• 150 watts Peak Each
• 50 watts RMS Each
• 8 ohm Impedance

DS18 PRO-TW820 (Sold Individually)

200W Peak (100W RMS) 2.3" Pro Series High Compression Super Bullet Tweeter

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200W Peak (100W RMS) 2.3" Pro Series High Compression Super Bullet Tweeter

• 2.3" Pro Series Pro-Audio Super Bullet Tweeter
• 200 watts Peak Each
• 100 watts RMS Each
• 4 ohm Impedance

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$71.95

In stock

• 2.3" Pro Series Pro-Audio Super Bullet Tweeter
• 200 watts Peak Each
• 100 watts RMS Each
• 4 ohm Impedance

DS18 PRO-DKH1X

640W Peak (160W RMS) 2" Throat 8-ohm Aluminum Horn Compression Driver with Spacer

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640W Peak (160W RMS) 2" Throat 8-ohm Aluminum Horn Compression Driver with Spacer

• 2" Throat compression driver with horn and spacer
• Titanium Diaphragm Material
• 640 watts Peak, 160 watts RMS
• 8 ohm Impedance

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List price $158.99
-17% $131.95

In stock

• 2" Throat compression driver with horn and spacer
• Titanium Diaphragm Material
• 640 watts Peak, 160 watts RMS
• 8 ohm Impedance

DS18 PRO-TWX4 (Sold Individually)

560W Peak (280W RMS) 4.53" 4-ohm Pro Audio Super Bullet Tweeter

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560W Peak (280W RMS) 4.53" 4-ohm Pro Audio Super Bullet Tweeter

• 4.53" Titanium Super Bullet Tweeter
• 560 watts Peak Each
• 280 watts RMS Each
• 4 ohm Impedance

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$63.95

In stock

Only 3 Left!

• 4.53" Titanium Super Bullet Tweeter
• 560 watts Peak Each
• 280 watts RMS Each
• 4 ohm Impedance

Massive Audio CT4XV2 (Sold Individually)

120W Peak (30W RMS) 1” 4-ohm Pro Audio Power Bullet Tweeter

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120W Peak (30W RMS) 1” 4-ohm Pro Audio Power Bullet Tweeter

• 1" Titanium Pro Audio Power Bullet Tweeter
• 120 watts Peak Each
• 30 watts RMS Each
• 4 ohm Impedance

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List price $49.99
-20% $39.99

In stock

• 1" Titanium Pro Audio Power Bullet Tweeter
• 120 watts Peak Each
• 30 watts RMS Each
• 4 ohm Impedance

PRV Audio WG270Ph

300W Peak (150W RMS) 1" Trio Series Pro Audio Square Compression Horn Driver

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300W Peak (150W RMS) 1" Trio Series Pro Audio Square Compression Horn Driver

• 1" Trio Series Pro-Audio Compression Horn Driver
• 300 watts Peak Each
• 150 watts RMS Each
• 8 ohm Impedance

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List price $49.89
-20% $39.91

In stock

• 1" Trio Series Pro-Audio Compression Horn Driver
• 300 watts Peak Each
• 150 watts RMS Each
• 8 ohm Impedance

Deaf Bonce Machete MLT 15

100W Peak (50W RMS) 2.2" Machete Series 4-ohm Car Tweeters

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100W Peak (50W RMS) 2.2" Machete Series 4-ohm Car Tweeters

• 2.2" Machete Series Tweeters
• 50 watts Peak Each
• 25 watts RMS Each
• 4 ohm Impedance

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$49.90

Available

Ships in 10-14 days

• 2.2" Machete Series Tweeters
• 50 watts Peak Each
• 25 watts RMS Each
• 4 ohm Impedance

DS18 PRO-TW750C-4/BK

400W Peak (150W RMS) 4" Pro Audio 4-ohm Super Bullet Tweeter (Black)

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400W Peak (150W RMS) 4" Pro Audio 4-ohm Super Bullet Tweeter (Black)

• 4" Titanium tweeter construction
• 400 watts Peak / 150 watts RMS
• 4 ohms impedance
• 1.5" KSV voice coil
• Body Color/Finish: Black

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List price $64.99
-17% $53.95

In stock

Only 2 Left!

• 4" Titanium tweeter construction
• 400 watts Peak / 150 watts RMS
• 4 ohms impedance
• 1.5" KSV voice coil
• Body Color/Finish: Black

DS18 PRO-DR1.35

400W Peak (200W RMS) 1” Throat 8-ohm Twist-on Compression Driver with Titanium Voice Coil

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400W Peak (200W RMS) 1” Throat 8-ohm Twist-on Compression Driver with Titanium Voice Coil

• 1" Throat compression driver
• Titanium Diaphragm Material
• 400 watts Peak, 200 watts RMS
• 8 ohm Impedance

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List price $47.99
-17% $39.95

In stock.

• 1" Throat compression driver
• Titanium Diaphragm Material
• 400 watts Peak, 200 watts RMS
• 8 ohm Impedance

DS18 PRO-DR1.354

320W Peak (80W RMS) 1” Throat 4-ohm Twist-on Compression Driver with Titanium Voice Coil

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320W Peak (80W RMS) 1” Throat 4-ohm Twist-on Compression Driver with Titanium Voice Coil

• 1" Throat compression driver
• Titanium Diaphragm Material
• 320 watts Peak, 80 watts RMS
• 4 ohm Impedance

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List price $47.99
-17% $39.95

In stock.

• 1" Throat compression driver
• Titanium Diaphragm Material
• 320 watts Peak, 80 watts RMS
• 4 ohm Impedance

DS18 PRO-DN22PY.8

800W Peak (200W RMS) 2" Throat 8-ohm Bolt-On Compression Driver with Polyimide Voice Coil

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800W Peak (200W RMS) 2" Throat 8-ohm Bolt-On Compression Driver with Polyimide Voice Coil

• 2" Throat compression driver
• Polyimide Diaphragm Material
• 800 watts Peak, 200 watts RMS
• 8 ohm Impedance

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List price $287.99
-17% $239.95

In stock.

• 2" Throat compression driver
• Polyimide Diaphragm Material
• 800 watts Peak, 200 watts RMS
• 8 ohm Impedance

DS18 PRO-D22PH.8

640W Peak (160W RMS) 2" Throat 8-ohm Bolt-on Phenolic Compression Driver

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640W Peak (160W RMS) 2" Throat 8-ohm Bolt-on Phenolic Compression Driver

• 2" Throat compression driver
• Phenolic Diaphragm Material
• 640 watts Peak, 160 watts RMS
• 8 ohm Impedance

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VIP Product Get $8.40 in rewards to spend later

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List price $100.99
-17% $83.95

In stock

• 2" Throat compression driver
• Phenolic Diaphragm Material
• 640 watts Peak, 160 watts RMS
• 8 ohm Impedance

DS18 PRO-D22PY.8

640W Peak (160W RMS) 2" Throat 8-ohm Bolt-on Polyimide Compression Driver

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640W Peak (160W RMS) 2" Throat 8-ohm Bolt-on Polyimide Compression Driver

• 2" Throat compression driver
• Polyimide Diaphragm Material
• 640 watts Peak, 160 watts RMS
• 8 ohm Impedance

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VIP Product Get $8.40 in rewards to spend later

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List price $100.99
-17% $83.95

In stock

• 2" Throat compression driver
• Polyimide Diaphragm Material
• 640 watts Peak, 160 watts RMS
• 8 ohm Impedance

PRV Audio TW500My-Nd

150W Peak (75W RMS) 1.25" Shallow Bullet Super Tweeter (Sold Individually)

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150W Peak (75W RMS) 1.25" Shallow Bullet Super Tweeter (Sold Individually)

• 1.25" Pro-Audio Bullet Tweeters
• 150 watts Peak Each
• 75 watts RMS Each
• 8 ohm Impedance

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List price $62.39
-20% $49.91

In stock

• 1.25" Pro-Audio Bullet Tweeters
• 150 watts Peak Each
• 75 watts RMS Each
• 8 ohm Impedance

Belva BSCT4 Tweeter (Sold Individually)

4-inch Pro Car Audio Tweeter

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4-inch Pro Car Audio Tweeter

• 4-inch Pro Car Audio Tweeter (sold individually)
• Peak: 200W
• 1.75" Voice Coil
• Impedance: 4 Ohm

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List price $49.99
-60% $19.99

In stock

Used from: $19.49

• 4-inch Pro Car Audio Tweeter (sold individually)
• Peak: 200W
• 1.75" Voice Coil
• Impedance: 4 Ohm

Diamond Audio MO1T2

100W Peak (50W RMS) 1" Motorsport Series Pro Audio Compression Bullet Tweeter

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100W Peak (50W RMS) 1" Motorsport Series Pro Audio Compression Bullet Tweeter

• 1" Pro Audio Compression Bullet Tweeter
• 100 watts Peak
• 50 watts RMS
• 4 ohm Impedance

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$219.99

In stock

Only 2 Left!

• 1" Pro Audio Compression Bullet Tweeter
• 100 watts Peak
• 50 watts RMS
• 4 ohm Impedance

DS18 PRO-TW750CN-8/BK (Sold Individually)

440W Peak (160W RMS) 4" PRO Series 8-ohm Pro Audio Super Bullet Tweeter

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440W Peak (160W RMS) 4" PRO Series 8-ohm Pro Audio Super Bullet Tweeter

• 4" PRO Series Pro Audio Tweeter
• 440 watts Peak, 160 watts RMS
• 8 ohm impedance

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$119.95

In stock

Only 2 Left!

• 4" PRO Series Pro Audio Tweeter
• 440 watts Peak, 160 watts RMS
• 8 ohm impedance

DS18 PRO-TWX3.8Ti (Sold Individually)

500W Peak (150W RMS) 3.8" PRO-TWX Series 8-ohm Aluminum Super Bullet Tweeter

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500W Peak (150W RMS) 3.8" PRO-TWX Series 8-ohm Aluminum Super Bullet Tweeter

• 3.8" PRO-TWX Series 4-ohm Aluminum Super Bullet Tweeter
• 500 watts Peak Each
• Program Power: 250 watts each
• 125 watts RMS Each
• 8 ohm Impedance
• Sensitivity: 108 dB (1w/1m)

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$53.95

Available

Ships in 10-14 days

• 3.8" PRO-TWX Series 4-ohm Aluminum Super Bullet Tweeter
• 500 watts Peak Each
• Program Power: 250 watts each
• 125 watts RMS Each
• 8 ohm Impedance
• Sensitivity: 108 dB (1w/1m)

DS18 PRO-DR1.75

600W Peak (300W RMS) 1” Throat 8-ohm Twist-on Compression Driver with Titanium Voice Coil

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600W Peak (300W RMS) 1” Throat 8-ohm Twist-on Compression Driver with Titanium Voice Coil

• 1" Throat compression driver
• Titanium Diaphragm Material
• 600 watts Peak, 300 watts RMS
• 8 ohm Impedance

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List price $56.99
-18% $46.95

In stock.

• 1" Throat compression driver
• Titanium Diaphragm Material
• 600 watts Peak, 300 watts RMS
• 8 ohm Impedance

Cerwin-Vega HEDPS1 (Sold Individually)

180W Peak (60W RMS) 1" HED Pro Series 4-ohm Pro Audio Super Bullet Tweeter

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180W Peak (60W RMS) 1" HED Pro Series 4-ohm Pro Audio Super Bullet Tweeter

• 1" HED Pro Series Super Bullet Tweeter
• 180 watts Peak
• 60 watts RMS
• 4 ohm Impedance

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$43.99

In stock.

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    FAQ for Universal-Fit Audio & Electronics in 2004 S4

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2004 Audi S4?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your S4.

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

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