See all parts that fit your 2003 DeVille
Install a DSP and New Amplifier to Factory System in select 2019-2024 vehicles from Chevrolet, GMC, Cadillac
Product highlights
• Plug and Play T-harness for faster installation
• For select 2019-2024 vehicles from Chevrolet, GMC, Cadillac
• Designed for Ethernet amplifiers
• Designed to be used with factory radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
Install New Speakers in select 1990-2021 vehicles from Chevrolet, GMC, Buick
$9.99
List price $14.99
Connect your factory antenna to a new aftermarket radio for select 1958-2023 vehicles from GMC, Chevrolet, Pontiac
$5.99
List price $8.95
Connect your factory antenna to a new aftermarket radio for select 1958-2024 vehicles from Chevrolet, GMC, Pontiac
$6.99
List price $7.99
Install a new Double-DIN car stereo in select 1996-2005 DeVille and Seville and Eldorado
$13.99
List price $26.99
Single DIN Stereo Dash Kit for select 1996-2005 DeVille and Seville and Eldorado
$17.99
List price $33.99
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers
$49.99
List price $59.99
120W Peak (30W RMS) 3.5" A-Series 2-way 4-ohm Coaxial Speakers for select GM, Ford and Volkswagen models
$49.99
List price $70.00
Overcome the factory radio’s built-in “audio processing” with patented digital signal processor, or “DSP”, vehicle-specific packages. Factory radios have built-in sound processing designed to make your mass-produced factory speakers sound as good as they can without breaking. This means that if you upgrade to aftermarket speakers, your factory radio will process the sound according to the factory settings and your system just won’t sound as great as you hoped it would.
Please use our Fitment Guide to determine specific compatibility for the submodel and audio features
The vehicle you have selected 2003 Cadillac DeVille is not compatible. Change vehicle or See list of compatible similar products
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
$339.99
List price $420.00
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers
$111.96
List price $159.99
150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers
$79.95
List price $109.95
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
List price $139.95
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
List price $119.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)
$469.99
List price $620.00
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• Plug and Play T-harness for faster installation
• For select 2010-2021 vehicles from Chevrolet, GMC, Cadillac
• Designed for MOST amplified systems
• Designed to be used with factory radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
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• Plug and Play T-harness for faster installation
• For select 2010-2025 vehicles from BMW
• Designed for MOST amplified sound systems
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
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• Plug and Play T-harness for faster installation
• For select 2022-2025 Grand Wagoneer and Grand Wagoneer L and Voyager
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Can be used with OE and aftermarket radios
• Retains U-Connect voice prompts
• Settings adjusted via Bluetooth in a smart device
• Independent high pass, low pass, and bandpass filters
$514.99
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• Digital Signal Processor (DSP) Interface and Harness
• Designed to integrate aftermarket amplifier with OEM systems
• All programming done using the Axxess DSP XL app
• 31-band graphic equalizer
• 5-band parametric equalizer per channel
• Designed for
(3)
$641.99
List price $713.99
• Plug and Play T-harness for faster installation
• For select 2020-2025 vehicles from Ford
• Designed for non-amplified systems
• Can be used with factory and aftermarket radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
(1)
$533.99
List price $593.99
• Plug and Play T-harness for faster installation
• For select 2021-2024 vehicles from GMC, Chevrolet, Buick
• Designed for non-amplified systems
• Can be used with factory and aftermarket radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
$533.99
List price $593.99
• DSP data interface with pre-wired harness
• For select 2016-2023 vehicles from Toyota
• Designed for non-amplified systems
• Can be used with factory and aftermarket radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
$533.99
List price $593.99
• Plug and Play T-harness for faster installation
• For select 2021-2026 Model S and Model X and Model Y
• Designed for Tesla amplified systems
• Can be used with factory and aftermarket radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
$399.99
List price $519.99
• Plug and Play T-harness for faster installation
• For select 2010-2019 vehicles from Subaru, Toyota, Scion
• Designed for non-amplified systems
• Can be used with factory and aftermarket radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters
$533.99
List price $593.99
Manufacturer:
Model Number:
AXDSPX-ETH1
Weight:
1.15lbs
Internal SKU:
axdspxeth1
Internal Product ID:
199476
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Buy One Get One Half Off Deal, Kicker KSC670 (44KSC6704)
400W Peak (200W RMS) 6.75" KS Series 2-Way Coaxial Car Speakers
(5)
$199.90
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250W Max, PRIME Series Monoblock Amplifier
(24)
$129.99
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Connect your factory antenna to a new aftermarket radio for select 1958-2023 vehicles from GMC, Chevrolet, Pontiac
(366)
$5.99
List price $8.95
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
