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1978 Cadillac DeVille

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

Universal-Fit Audio for 1978 Cadillac DeVille

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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Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Key Features
Amplifiers can offer a diverse array of features. If you select more than one feature, then you will view amplifiers that have ALL features selected. These include speaker-level inputs that facilitate seamless integration with factory audio systems, Bluetooth connectivity suitable for ATV/UTV or Classic vehicle setups, built-in DSPs that provide enhanced control over your audio signal, and a host of other functionalities to explore.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
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Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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MTX MA2500.1

2500W RMS Class D MA Series Monoblock Marine Amplifier with Bass Remote

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MTX MA2500.1

2500W RMS Class D MA Series Monoblock Marine Amplifier with Bass Remote

• 1000 watts x 1 channel @ 4 ohm
• 1750 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 1000 watts x 1 channel @ 4 ohm
• 1750 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 1 ohm Stable Monoblock Amplifier

JBL ClubA1000 (Club A 1000) - Open Box, Great

High Performance Mono-block Subwoofer Amplifier

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JBL ClubA1000 (Club A 1000) - Open Box, Great

High Performance Mono-block Subwoofer Amplifier

• Class D Amp Technology
• 4 Ohm: 600 Watts RMS x 1
• 2 Ohm: 1000 Watts RMS x 1
• Variable Crossover and Bass Boost
• Turn-On Mode Switch

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List price $499.95
-37% $314.96

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Kicker CXA660.5T (46CXA6605T) w/ Remote Bass Controller

660W RMS Class AB CX-Series 5 Channel Car Amplifier with Wired Bass Remote Controller for CX Series Amplifiers

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Kicker CXA660.5T (46CXA6605T) w/ Remote Bass Controller

660W RMS Class AB CX-Series 5 Channel Car Amplifier with Wired Bass Remote Controller for CX Series Amplifiers

  • Kicker CXA660.5T 660W RMS 5-Channel Car Amplifier
  • Class AB CX-Series high-performance power plant
  • Wired Bass Remote Controller for effortless adjustments
  • Precision audio control for CX-Series amplifiers
  • Complete system integration with professional-grade hardware
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  • Kicker CXA660.5T 660W RMS 5-Channel Car Amplifier
  • Class AB CX-Series high-performance power plant
  • Wired Bass Remote Controller for effortless adjustments
  • Precision audio control for CX-Series amplifiers
  • Complete system integration with professional-grade hardware

Rockford Fosgate Prime R2-1200X1 (Open Box, Great)

1200W RMS Class D Prime Series Monoblock Car Amplifier

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Rockford Fosgate Prime R2-1200X1 (Open Box, Great)

1200W RMS Class D Prime Series Monoblock Car Amplifier

• 400 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier

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24
List price $449.99
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Sundown Audio SAM-100.4

400W RMS Class D SAM Series 4-Channel Marine and Amplifier with Bluetooth

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Sundown Audio SAM-100.4

400W RMS Class D SAM Series 4-Channel Marine and Amplifier with Bluetooth

• 700 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 700 watts x 4 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 700 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 700 watts x 4 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Limited time!

DC Audio 10.0k

10000W RMS Class D Competition Series Monoblock Car Amplifier (with Bass Remote)

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DC Audio 10.0k

10000W RMS Class D Competition Series Monoblock Car Amplifier (with Bass Remote)

• 3000 watts x 1 channel @ 4 ohm
• 5500 watts x 1 channel @ 2 ohm
• 10000 watts x 1 channel @ 1 ohm
• Total RMS Power: 10000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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NVX XKIT02

NVX XKIT02

$179.99

$125.99

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Diamond Audio MICRO85U

1035W RMS Class D Micro8U Series 5-Channel Full Range Car Amplifier

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Diamond Audio MICRO85U

1035W RMS Class D Micro8U Series 5-Channel Full Range Car Amplifier

• + @ 4 ohm
• 85 watts x 1 channel + 375 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 1 channel @ 4 ohm + 375 watts x 1 channel @ 2 ohm
• Total RMS Power: 1035 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier

2+ offers available
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List price $719.99
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Soundstream DPA1.2000D

2000W Peak (400W RMS) Class D Reserve Series Monoblock Car Amplifier with Bass Remote

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Soundstream DPA1.2000D

2000W Peak (400W RMS) Class D Reserve Series Monoblock Car Amplifier with Bass Remote

• 250 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier

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List price $209.99
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Save 30% off an NVX XKIT82 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT82 Amp Kit! No code needed — discount applies automatically at checkout.
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DC Audio 90.4

520W RMS Class AB Competition Series 4-Channel Car Amplifier (with Bass Remote)

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DC Audio 90.4

520W RMS Class AB Competition Series 4-Channel Car Amplifier (with Bass Remote)

• 90 watts x 4 channel @ 4 ohm
• 130 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class A/B 2 ohm Stable 4-Channel-Channel Amplifier

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Save 30% off an NVX XKIT44 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT44 Amp Kit! No code needed — discount applies automatically at checkout.
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JBL Club A600 (AMPCBA600AM)

1200W Peak (600W RMS) Class D Club Series Compact Monoblock Amplifier with Bass Remote

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JBL Club A600 (AMPCBA600AM)

1200W Peak (600W RMS) Class D Club Series Compact Monoblock Amplifier with Bass Remote

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier

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Kicker PXA1000.5 (48PXA10005)

1400W Peak (1000W RMS) Class D PXA Series 5-Channel Marine and Powersports Amplifier

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Kicker PXA1000.5 (48PXA10005)

1400W Peak (1000W RMS) Class D PXA Series 5-Channel Marine and Powersports Amplifier

• 100 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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List price $879.99
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DS18 SMD-2800.5

2800W RMS Class AB/D SMD Series 5 Channel Car Amplifier with Bass Remote

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DS18 SMD-2800.5

2800W RMS Class AB/D SMD Series 5 Channel Car Amplifier with Bass Remote

• 180 watts x 4 channel + 700 watts x 1 channel @ 4 ohm
• 250 watts x 4 channel + 1100 watts x 1 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm + 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 2800 watts
• Class AB / D 1 ohm Stable 5-Channel Amplifier

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NVX XKIT06

NVX XKIT06

$184.99

$129.49

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DS18 G1800.4D

1800W Peak (920W RMS) Class D GEN-X Series 4 Channel Full Range Car Amplifier

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DS18 G1800.4D

1800W Peak (920W RMS) Class D GEN-X Series 4 Channel Full Range Car Amplifier

• 150 watts x 4 channel @ 4 ohm
• 230 watts x 4 channel @ 2 ohm
• Bridged: 430 watts x 2 channel @ 4 ohm
• Total RMS Power: 920 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
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NVX XKIT44

NVX XKIT44

$119.99

$83.99

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DC Audio 1.2k

1200W RMS Class D Competition Series Monoblock Car Amplifier (with Bass Remote)

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DC Audio 1.2k

1200W RMS Class D Competition Series Monoblock Car Amplifier (with Bass Remote)

• 350 watts x 1 channel @ 4 ohm
• 700 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Deaf Bonce Apocalypse ATOM 12.5K PRO

12500W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

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Deaf Bonce Apocalypse ATOM 12.5K PRO

12500W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

• 3870 watts x 1 channel @ 4 ohm
• 6950 watts x 1 channel @ 2 ohm
• 12500 watts x 1 channel @ 1 ohm
• Total RMS Power: 12500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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NVX XKIT02

NVX XKIT02

$179.99

$125.99

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Earthquake Sound Mini D2500

2500W Peak (2000W RMS) Class D MiNi Series Monoblock Car Amplifier

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Earthquake Sound Mini D2500

2500W Peak (2000W RMS) Class D MiNi Series Monoblock Car Amplifier

• 850 watts x 1 channel @ 4 ohm
• 1800 watts x 1 channel @ 2 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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JL Audio VX700/5i

700W RMS Class D VXi Series 5 Channel Car Amplifier with Built-in DSP

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JL Audio VX700/5i

700W RMS Class D VXi Series 5 Channel Car Amplifier with Built-in DSP

• 75 watts x 4 channel + 180 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes integrated DSP

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Diamond Audio DES500.1D

500W RMS Class D Diamond Elite Series Monoblock Car Amplifier with Bass Remote

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Diamond Audio DES500.1D

500W RMS Class D Diamond Elite Series Monoblock Car Amplifier with Bass Remote

• 400 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 500 watts x 1 channel @ 1 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Cerwin-Vega XED4004D

400W Peak (360W RMS) Class D XED Series 4 Channel Car Amplifier

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Cerwin-Vega XED4004D

400W Peak (360W RMS) Class D XED Series 4 Channel Car Amplifier

• 60 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 170 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Massive Audio P8

7000W Peak (3500W RMS) Class D Primo Series Monoblock Car Amplifier

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Massive Audio P8

7000W Peak (3500W RMS) Class D Primo Series Monoblock Car Amplifier

• 1000 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2300 watts x 1 channel @ 1 ohm
• Total RMS Power: 3500 watts
• Class D 0.5 ohm Stable Monoblock Amplifier

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    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1978 Cadillac DeVille?

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