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2000 Audi A4

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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.

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Universal-Fit Audio for 2000 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.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

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Tru Spec Elite SINGLE Z8 8"

Empty Single 8" Vented Enclosure for Sundown Z8 8" Subwoofers

SINGLE Z8 8" big
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Tru Spec Elite SINGLE Z8 8"

Empty Single 8" Vented Enclosure for Sundown Z8 8" Subwoofers

• 8" Single Ported Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Designed for use with Sundown Z8 subwoofers (Sold separately)

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$239.99

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• 8" Single Ported Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Designed for use with Sundown Z8 subwoofers (Sold separately)

Tru Spec 6X6.5SUPB (1551SZ)

Empty Six Subwoofer Vented Prefabricated Enclosure

6x6.5supb big
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Tru Spec 6X6.5SUPB (1551SZ)

Empty Six Subwoofer Vented Prefabricated Enclosure

• 6.5" 6-Subwoofer Ported Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.5 cubic feet
• Six double flush baffle

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List price $399.99
-25% $299.99

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Tru Spec S12KL7X (1761UCI)

Empty Single 12" Vented Prefabricated Square Enclosure for Kicker Solo X 12" L7X Subwoofer

S12KL7X big
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Tru Spec S12KL7X (1761UCI)

Empty Single 12" Vented Prefabricated Square Enclosure for Kicker Solo X 12" L7X Subwoofer

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.00 cubic feet
• Compatible with Kicker 12" Solo X L7X (Sold separately)

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List price $459.99
-17% $379.99

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Tru Spec 4X8SUBP (1541YTM)

Empty Quad 8" Vented Prefabricated Enclosure

4x8supb big
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Tru Spec 4X8SUBP (1541YTM)

Empty Quad 8" Vented Prefabricated Enclosure

• 8" Quad Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Computer-designed CNC cut

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3
List price $399.99
-25% $299.99

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Tru Spec Dual 10SUBP (1554GSJ)

Empty Dual 10" Prefabricated Vented Enclosure

Dual 10supb big
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Tru Spec Dual 10SUBP (1554GSJ)

Empty Dual 10" Prefabricated Vented Enclosure

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• Computer-designed CNC cut

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List price $399.99
-41% $234.99

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Tru Spec STACK FAB 10" SEALED

Empty Single 10" Sealed Stack Fab Enclosure

STACK FAB 10" SEALED big
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Tru Spec STACK FAB 10" SEALED

Empty Single 10" Sealed Stack Fab Enclosure

• 10" Single/Dual Sealed Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Total box volume: 0.55 cubic feet
• Designed for use with slim 10" subwoofers

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$159.99

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• 10" Single/Dual Sealed Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Total box volume: 0.55 cubic feet
• Designed for use with slim 10" subwoofers

Tru Spec 3X10SUPB (1552FGQ)

Empty Triple 10" Vented Prefabricated Enclosure

3x10supb big
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Tru Spec 3X10SUPB (1552FGQ)

Empty Triple 10" Vented Prefabricated Enclosure

• 10" Triple Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Computer-designed CNC cut

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List price $399.99
-25% $299.99

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Tru Spec Dual 10SUBP with 2 Sundown Audio SA-10s

Dual 10" Prefabricated Vented Enclosure with 2000W Peak (1000W RMS) 10" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL10D4)

DUAL10SUPB_2X_SACL10D4 big
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Tru Spec Dual 10SUBP with 2 Sundown Audio SA-10s

Dual 10" Prefabricated Vented Enclosure with 2000W Peak (1000W RMS) 10" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL10D4)

•10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• Computer-designed CNC cut

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1
List price $1167.97
-25% $874.97

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•10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• Computer-designed CNC cut

Tru Spec Single 12 SUBP and Sundown Audio SA-12 v2

Single 12" Vented Prefabricated High Out Enclosure with 2500W Peak (1250W RMS) 12" SA Series Dual 2-ohm Car Subwoofer (SW-SAV212D2)

SINGLE12SUPB_SAV212D2 big Out of stock
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Tru Spec Single 12 SUBP and Sundown Audio SA-12 v2

Single 12" Vented Prefabricated High Out Enclosure with 2500W Peak (1250W RMS) 12" SA Series Dual 2-ohm Car Subwoofer (SW-SAV212D2)

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.5 cubic feet
• High-output XXL enclosure with double flush baffle

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1
List price $891.98
-28% $644.98
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• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.5 cubic feet
• High-output XXL enclosure with double flush baffle

Tru Spec Dual 10" and 2x Sundown Audio E10 v.4 D2

Dual 10" Vented Prefabricated Enclosure with 1500W Peak (750W RMS) 10" E Series Dual 2-ohm Car Subwoofer (SW-EV410D2)

DUAL10_2X_EV410D2 big
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Tru Spec Dual 10" and 2x Sundown Audio E10 v.4 D2

Dual 10" Vented Prefabricated Enclosure with 1500W Peak (750W RMS) 10" E Series Dual 2-ohm Car Subwoofer (SW-EV410D2)

•10" Dual Ported Subwoofer Enclosure
•3/4" Medium Density Fiberboard (MDF) construction
•Total box volume: 2 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

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5
List price $839.97
-24% $634.97

In stock.

Add to Cart

•10" Dual Ported Subwoofer Enclosure
•3/4" Medium Density Fiberboard (MDF) construction
•Total box volume: 2 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

Tru Spec Dual 12in P with 2x Sundown Audio SA-12 v2

Dual 12" Vented Prefabricated Enclosure for Sundown SA 12" Subwoofers with 2500W Peak (1250W RMS) 12" SA Series Dual 4-ohm Car Subwoofer

DUAL12INP_2X_SAV212D4 big Out of stock
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Tru Spec Dual 12in P with 2x Sundown Audio SA-12 v2

Dual 12" Vented Prefabricated Enclosure for Sundown SA 12" Subwoofers with 2500W Peak (1250W RMS) 12" SA Series Dual 4-ohm Car Subwoofer


• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Compatible for Sundown SA 12V2 subwoofers (Sold separately)

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9
List price $1283.97
-18% $1,054.97
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• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Compatible for Sundown SA 12V2 subwoofers (Sold separately)

Tru Spec Dual 12in P with 2x Sundown Audio E12 v.4

Dual 12" Vented Prefabricated Enclosure for Sundown SA 12" Subwoofers with 1500W Peak (750W RMS) 12" E Series Dual 4-ohm Car Subwoofer

DUAL12INP_2X_EV412D4 big
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Tru Spec Dual 12in P with 2x Sundown Audio E12 v.4

Dual 12" Vented Prefabricated Enclosure for Sundown SA 12" Subwoofers with 1500W Peak (750W RMS) 12" E Series Dual 4-ohm Car Subwoofer

• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Compatible for Sundown SA 12V2 subwoofers (Sold separately)

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6
List price $887.97
-18% $724.97

In stock.

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• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Compatible for Sundown SA 12V2 subwoofers (Sold separately)

Lowest price in 30 days

Tru Spec 4x6.5SUPB with 4x Sundown Audio SA-6.5 SW

Quad 6.5" Vented Prefabricated Enclosure with 600W Peak (300W RMS) 6.5" SA Series Dual 4-ohm Car Subwoofer (SW-SA6.5SWD4)

4X65SUPB_4SA65SWD4 big
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Tru Spec 4x6.5SUPB with 4x Sundown Audio SA-6.5 SW

Quad 6.5" Vented Prefabricated Enclosure with 600W Peak (300W RMS) 6.5" SA Series Dual 4-ohm Car Subwoofer (SW-SA6.5SWD4)

• 6.5" Quad Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• High-output XXL enclosure with double flush baffle

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List price $1071.95
-30% $754.95

In stock.

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• 6.5" Quad Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• High-output XXL enclosure with double flush baffle

Tru Spec Single 12 SUBP with Sundown Audio SA-12

Single 12" Vented Prefabricated High Out Enclosure with 2000W Peak (1000W RMS) 12" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL12D4)

SINGLE12SUPB_SACL12D4 big
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Tru Spec Single 12 SUBP with Sundown Audio SA-12

Single 12" Vented Prefabricated High Out Enclosure with 2000W Peak (1000W RMS) 12" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL12D4)

•12" Single Ported Subwoofer Enclosure
&bull 3/4" Medium Density Fiberboard (MDF) construction
&bull Total box volume: 2.5 cubic feet
• High-output XXL enclosure with double flush baffle

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5
List price $807.98
-29% $574.98

In stock.

Add to Cart

•12" Single Ported Subwoofer Enclosure
&bull 3/4" Medium Density Fiberboard (MDF) construction
&bull Total box volume: 2.5 cubic feet
• High-output XXL enclosure with double flush baffle

Lowest price in 30 days

Tru Spec 4x6.5SUPB with 4x Sundown Audio SA-6.5 SW

Quad 6.5" Vented Prefabricated Enclosure with four 600W Peak (300W RMS) 6.5" SA Series Dual 2-ohm Car Subwoofers (SW-SA6.5SWD2)

4X65SUPB_4X_SA65SWD2 big
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Tru Spec 4x6.5SUPB with 4x Sundown Audio SA-6.5 SW

Quad 6.5" Vented Prefabricated Enclosure with four 600W Peak (300W RMS) 6.5" SA Series Dual 2-ohm Car Subwoofers (SW-SA6.5SWD2)

• 6.5" Quad Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• High-output XXL enclosure with double flush baffle

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List price $1071.95
-30% $754.95

In stock.

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• 6.5" Quad Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• High-output XXL enclosure with double flush baffle

Tru Spec Dual 8" and 2x Sundown Audio SA-8 v.3 D4

Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers and 1200W Peak (600W RMS) 8" SA Series Dual 4-ohm Car Subwoofer (SW-SAV38D4)

DUAL8_2X_SAV38D4 big Out of stock
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Tru Spec Dual 8" and 2x Sundown Audio SA-8 v.3 D4

Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers and 1200W Peak (600W RMS) 8" SA Series Dual 4-ohm Car Subwoofer (SW-SAV38D4)

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.30 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

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9
List price $959.97
-21% $759.97
Add to Cart

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.30 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

Tru Spec Dual 8" with 2x Sundown Audio SA-8 v.3 D2

Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers with 1200W Peak (600W RMS) 8" SA Series Dual 2-ohm Car Subwoofer (SW-SAV38D2)

DUAL8_2X_SAV38D2 big Out of stock
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Tru Spec Dual 8" with 2x Sundown Audio SA-8 v.3 D2

Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers with 1200W Peak (600W RMS) 8" SA Series Dual 2-ohm Car Subwoofer (SW-SAV38D2)

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.30 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

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List price $959.97
-21% $759.97
Add to Cart

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.30 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

Tru Spec Dual 10 with 2 Sundown SA-10 Classic D4

Dual 10" Vented Prefabricated Enclosure with 2000W Peak (1000W RMS) 10" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL10D4)

DUAL10_2X_SACL10D4 big
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Tru Spec Dual 10 with 2 Sundown SA-10 Classic D4

Dual 10" Vented Prefabricated Enclosure with 2000W Peak (1000W RMS) 10" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL10D4)

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2 cubic feet
•Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

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6
List price $1067.97
-23% $824.97

In stock.

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• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2 cubic feet
•Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

Tru Spec Single 12 SUBP with Sundown Audio SA-12

Single 12" Vented Prefabricated High Out Enclosure with 2000W Peak (1000W RMS) 12" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL12D2)

SINGLE12SUPB_SACL12D2 big
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Tru Spec Single 12 SUBP with Sundown Audio SA-12

Single 12" Vented Prefabricated High Out Enclosure with 2000W Peak (1000W RMS) 12" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL12D2)

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.5 cubic feet
• High-output XXL enclosure with double flush baffle

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1
List price $807.98
-29% $574.98

In stock.

Add to Cart

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.5 cubic feet
• High-output XXL enclosure with double flush baffle

Tru Spec Single 10" and Sundown Audio SA-12 v.2

Single 10" Vented Prefabricated Enclosure with 2500W Peak (1250W RMS) 12" SA Series Dual 4-ohm Car Subwoofer (SW-SAV212D4)

SINGLE10_SAV212D4 big Out of stock
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Tru Spec Single 10" and Sundown Audio SA-12 v.2

Single 10" Vented Prefabricated Enclosure with 2500W Peak (1250W RMS) 12" SA Series Dual 4-ohm Car Subwoofer (SW-SAV212D4)

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

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3
List price $721.98
-21% $569.98
Add to Cart

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

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    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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