Garage
Shop

Loading...
SAAI651 main

Scosche SAAI651

select 1996-2006 A6 and TT and A4 Multi 6.5" Speaker Adapter

1
-26.76%

$10.95

List price $14.95

Shop all 2000 Audi A4 Car Audio, Speakers, & Electronics

Loading...
Filters
filter-icon Filters & Sort
Limited time!

Jensen CMR2724

7" Double DIN Touch Screen Digital Multimedia Receiver with Bluetooth

CMR2724 big
Go to item page Right Arrow Icon of Right Arrow

7" Double DIN Touch Screen Digital Multimedia Receiver with Bluetooth

• Double DIN Bluetooth Digital Multimedia Receiver
• 7" TFT-LCD Display
• iPhone and Android compatible via Bluetooth
• 3 sets of preamp outputs
• 7 Band Graphic Equalizer
• Dual (front/rear view) camera input
• Bluetooth voice activation button for Siri/Google Assistant

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for this stereo

found car based on your search
Fits your A4
4
List price $109.99
Save $27.50
-25% $82.49

In stock

• Double DIN Bluetooth Digital Multimedia Receiver
• 7" TFT-LCD Display
• iPhone and Android compatible via Bluetooth
• 3 sets of preamp outputs
• 7 Band Graphic Equalizer
• Dual (front/rear view) camera input
• Bluetooth voice activation button for Siri/Google Assistant

Kenwood eXcelon KDC-X705

Single DIN CD Multimedia Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)

KDC-X705 big
Go to item page Right Arrow Icon of Right Arrow

Single DIN CD Multimedia Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)

• Single DIN Bluetooth Digital Multimedia Receiver with USB and AUX
• LCD Text Display
• iPhone and Android Compatible
• 3 sets of 5 volts preamp outputs
• 13-Band Graphic Equalizer with Digital Time Alignment
• SiriusXM Satellite Radio Ready

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $22.90 in rewards to spend later

install icon

Free or discounted install kits when available.

found car based on your search
Fits your A4
4
List price $280.00
-18% $229.00

In stock

Limited time!

Kenwood KFC-1666S

600W Peak (60W RMS) 6.5" Sport Series 2 Way Coaxial 4-ohm Car Speakers

KFC-1666S big
Go to item page Right Arrow Icon of Right Arrow

600W Peak (60W RMS) 6.5" Sport Series 2 Way Coaxial 4-ohm Car Speakers

• 300 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Save $2 on install kits for this speaker

found car based on your search
Fits multiple locations in your A4
51
List price $80.00
Save 39%
-39% $49.00 /pair

In stock

Metra 40-VW53 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen

40-VW53 big
Go to item page Right Arrow Icon of Right Arrow

Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen

• Aftermarket Radio To Factory Antenna Adapter (Amplified)
• Compatible with select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen Vehicles
• Includes Power Wire For Antenna Booster
• Can Be Used In Place Of 40-VW54

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your A4
3
List price $17.99
-28% $12.99

In stock

• Aftermarket Radio To Factory Antenna Adapter (Amplified)
• Compatible with select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen Vehicles
• Includes Power Wire For Antenna Booster
• Can Be Used In Place Of 40-VW54

Limited time!

Alpine iLX-507

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Wireless Android Auto (SiriusXM and iDataLink Maestro Ready)

iLX-507 big
Go to item page Right Arrow Icon of Right Arrow

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Wireless Android Auto (SiriusXM and iDataLink Maestro Ready)

• Double DIN Bluetooth Digital Multimedia Receiver
• 7" TFT Active Matrix Display
• Wired and wireless Apple CarPlay and Android Auto Compatible
• 3 sets of 4 volts preamp outputs
• 13-Band Parametric Equalizer
• SiriusXM Satellite Radio Ready
• iDataLink Maestro Ready
• Built-in dual band (2.4 GHz / 5 GHz) Wi-Fi
• High-resolution audio playback

FREE Backup Camera at Checkout! Shop deal
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $78.00 in rewards to spend later

install icon

Save $49.97 on install kits for this stereo

found car based on your search
Fits your A4
17
List price $940.00
-17% $779.95

In stock

Limited time!

Rockford Fosgate Punch P1 P1675

240W Peak (120W RMS) 6.75” Punch Series 3 Way Coaxial 4-ohm Speakers

P1675 big
Go to item page Right Arrow Icon of Right Arrow

240W Peak (120W RMS) 6.75” Punch Series 3 Way Coaxial 4-ohm Speakers

• 120 watts Peak Each, 60 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $11.00 in rewards to spend later

install icon

Save $19 on install kits for this speaker

found car based on your search
Fits multiple locations in your A4
48
$109.99 /pair

In stock

Used from: $93.49
Limited time!

Alpine ILX-W770M

6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, SiriusXM Ready, and iDataLink Maestro Ready

ILX-W770-M big
Go to item page Right Arrow Icon of Right Arrow

6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, SiriusXM Ready, and iDataLink Maestro Ready

• Double DIN In-Dash Bluetooth Digital Multimedia Receiver
• 6.75" Capacitive Touchscreen Display
• Wireless Apple CarPlay and Android Auto Compatible
• 3 sets of 4 volts preamp outputs
• 13-Band Graphic Equalizer
• SiriusXM Satellite Radio Ready
• iDataLink Maestro compatible

FREE Backup Camera at Checkout! Shop deal
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $45.00 in rewards to spend later

install icon

Save $49.97 on install kits for this stereo

found car based on your search
Fits your A4
6
List price $600.00
Save $150.05
-25% $449.95

In stock

Limited time!

Rockford Fosgate Power T16

280W Peak (140W RMS) 6" Power Series 2 Way Coaxial 4-ohm Speakers

T16 big
Go to item page Right Arrow Icon of Right Arrow

280W Peak (140W RMS) 6" Power Series 2 Way Coaxial 4-ohm Speakers

• 140 watts Peak Each, 70 watts RMS Each
• 1" Aluminum Dome tweeters
• Carbon Fiber and Injection-molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Free Baffles with Select Speakers Shop deal
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $22.00 in rewards to spend later

install icon

Save $22 on install kits for this speaker

found car based on your search
Fits multiple locations in your A4
2
$219.99 /pair

In stock

Used from: $186.99

Kenwood DPX505BT

Double DIN CD Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)

DPX505BT big
Go to item page Right Arrow Icon of Right Arrow

Double DIN CD Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)

• Double DIN Bluetooth CD Digital Multimedia Receiver with USB and AUX
• LCD Text Display
• iPhone and Android Compatible
• 3 sets of 2.5 volts preamp outputs
• 13-Band Graphic Equalizer with Digital Time Alignment
• SiriusXM Satellite Radio Ready

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Save $42 on install kits for this stereo

found car based on your search
Fits your A4
18
List price $230.00
-22% $179.00

In stock

Limited time!

Jensen CAR723W

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, Android Auto

CAR723W big
Go to item page Right Arrow Icon of Right Arrow

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, Android Auto

• Double DIN Bluetooth Digital Multimedia Receiver
• 7" Capacitive Touchscreen Display
• Wireless Apple CarPlay and Android Auto Compatible
• 3 sets of 4 volts preamp outputs
• 10-Band EQ with 7 EQ Presets
• Dual (front/rear view) camera
• Bluetooth voice activation button for Siri/Google Assistant

FREE Backup Camera at Checkout! Shop deal
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $24.00 in rewards to spend later

install icon

Save $9 on install kits for this stereo

found car based on your search
Fits your A4
18
List price $269.99
Save $30.00
-11% $239.99

In stock

Only 1 Left!

Limited time!

Pioneer TS-D65F

540W Peak (180W RMS) 6.5" D Series 2-Way Coaxial 4-ohm Speakers

TS-D65F big
Go to item page Right Arrow Icon of Right Arrow

540W Peak (180W RMS) 6.5" D Series 2-Way Coaxial 4-ohm Speakers

• 270 watts Peak Each, 90 watts RMS Each
• 1" Polyester Fiber Soft Dome swivel tweeters
• Aramid fiber reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for this speaker

found car based on your search
Fits multiple locations in your A4
1
List price $210.00
Save $99.50
-47% $110.50 /pair

In stock

Metra 44-PW530 Antenna

Universal Fully Automatic Power Antenna

44-PW530 big
Go to item page Right Arrow Icon of Right Arrow

Universal Fully Automatic Power Antenna

• Replacement Power Antenna for Select Vehicles
• Replaceable Mast
• Fully Automatic

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your A4
2
List price $213.99
-44% $119.99

In stock

Only 1 Left!

• Replacement Power Antenna for Select Vehicles
• Replaceable Mast
• Fully Automatic

Deaf Bonce Apocalypse AP-M61SE

520W Peak (260W RMS) 6.5” Apocalypse Series Midrange 4-ohm Speakers

AP-M61SE big
Go to item page Right Arrow Icon of Right Arrow

520W Peak (260W RMS) 6.5” Apocalypse Series Midrange 4-ohm Speakers

• 260 watts Peak Each, 130 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 101.5 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for this speaker

found car based on your search
Fits multiple locations in your A4
8
$109.90 /pair

In stock

Infinity REF-6532ex with Sound Damping

330W Max (110W RMS) 6.5" Reference Series 2-Way Coaxial EZ Fit Car Speakers + NVX SDSK2 Sound Damping

REF6532EXAM_SDSK2 big
Go to item page Right Arrow Icon of Right Arrow

330W Max (110W RMS) 6.5" Reference Series 2-Way Coaxial EZ Fit Car Speakers + NVX SDSK2 Sound Damping

• 165 Watts Max Each, 55 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 93dB
• Mounting Depth: 1-13/16"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your A4
54
List price $148.74
-36% $94.98

In stock

• 165 Watts Max Each, 55 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 93dB
• Mounting Depth: 1-13/16"

Limited time!

JVC KW-M590BT

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto

KW-M590BT big
Go to item page Right Arrow Icon of Right Arrow

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto

• Double DIN Bluetooth Digital Multimedia Receiver
• 6.8" WSVGA LCD Display
• Apple CarPlay and Android Auto Compatible
• Wired phone-mirroring for select devices via USB
• GPS antenna included
• 3 sets of 2.5 volts preamp outputs
• 13 Band Graphics Equalizer

FREE Backup Camera at Checkout! Shop deal
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $26.90 in rewards to spend later

install icon

Save $49.97 on install kits for this stereo

found car based on your search
Fits your A4
1
List price $399.00
Save $130.00
-33% $269.00

In stock

Kenwood DMX129BT

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth

DMX129BT big
Go to item page Right Arrow Icon of Right Arrow

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth

• Double DIN Bluetooth Digital Multimedia Receiver
• 6.75" Capacitive Touchscreen Display
• 3 sets of 2 volts preamp outputs
• 13-Band Graphic Equalizer
• Shallow chassis (2-15/16" deep)

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Save $3 on install kits for this stereo

found car based on your search
Fits your A4
4
List price $270.00
-26% $199.00

In stock

Used from: $169.15
Limited time!

Kicker KSC65 (51KSC6504)

400W Peak (200W RMS) 6.5" KS Series 2 Way Coaxial 4-ohm Speakers

51KSC6504 big
Go to item page Right Arrow Icon of Right Arrow

400W Peak (200W RMS) 6.5" KS Series 2 Way Coaxial 4-ohm Speakers

• 200 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $13.00 in rewards to spend later

install icon

Save $19 on install kits for this speaker

found car based on your search
Fits multiple locations in your A4
70
List price $149.99
-13% $129.99 /pair

In stock

NVX XQS65KIT Version 2 (XQS65KITv2)

600W Peak (300W RMS) 6.5" X-Series 2 Way Component Car Speakers

XQS65KITv2 big
Go to item page Right Arrow Icon of Right Arrow

600W Peak (300W RMS) 6.5" X-Series 2 Way Component Car Speakers

• 300 watts Peak Each, 150 watts RMS Each
• 1-1/8" Silk Dome tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

3+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $40.00 in rewards to spend later

install icon

Install kits available for this speaker

found car based on your search
Fits multiple locations in your A4
9
List price $499.99
-20% $399.99 /set

In stock

Continue to cart

Available Offers (3) for NVX XQS65KIT Version 2 (XQS65KITv2)
Offer image
Prime Time! Save 25% at Checkout!
List price $499.99
-20% $399.99
$299.99 with coupon | Price details
2026-06-28 23:59:00
Free Baffles with Select Speakers
Purchase $400 or More of NVX and Save 15%!
2026-07-27 11:08:20

Pioneer DEH-S6220BS

Single DIN CD Receiver with Bluetooth, Amazon Alexa and SiriusXM Ready

DEH-S6220BS big
Go to item page Right Arrow Icon of Right Arrow

Single DIN CD Receiver with Bluetooth, Amazon Alexa and SiriusXM Ready

• Single DIN Bluetooth CD Media Receiver
• Digital LED Backlit Display
• 3 sets of 4 volts preamp outputs
• 13-Band Equalizer
• SiriusXM Satellite Radio Ready
• Built-in Alexa

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

found car based on your search
Fits your A4
4
List price $230.00
-13% $199.99

In stock

JL Audio C1-650se

100W RMS 6.5" C1 Series 2 Way Component 4-ohm Speaker System

C1-650se big
Go to item page Right Arrow Icon of Right Arrow

100W RMS 6.5" C1 Series 2 Way Component 4-ohm Speaker System

• 50 watts RMS Each
• 1" Silk Dome Tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $25.00 in rewards to spend later

install icon

Save $19 on install kits for this speaker

found car based on your search
Fits multiple locations in your A4
2
$249.99 /set

In stock

Only 3 Left!

Used from: $212.49
NVX - Worth the Envy - Direct to Consumer Car Audio

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?

    Save up to 10 different vehicles in your garage
    Vehicle
    Store
    Delete

    2001 Cadillac DeVille

    2006 Toyota Highlander

    2009 Subaru Impreza

    2000 Pontiac Sunfire

    2006 Hyundai Sonata

    2022 Ram 1500 Classic

    2013 Ram 3500

    2000 Audi A4

    2005 Jeep Wrangler

    2013 Ford Mustang

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

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

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • 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.