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1978 Cadillac Eldorado

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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 Eldorado

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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Product Fitment Type
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.
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.
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.
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.
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.

Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
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Cerwin-Vega XED3002D with Belva 8 Gauge Amp Kit

250W RMS XED Series Class-D 2-Channel Car Amplifier

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Cerwin-Vega XED3002D with Belva 8 Gauge Amp Kit

250W RMS XED Series Class-D 2-Channel Car Amplifier

• 80 watts x 2 channel @ 4 ohm
• 120 watts x 2 channel @ 2 ohm
• Bridged: 220 watts x 1 channel @ 4 ohm
• Class D 2 ohm Stable 2-Channel-Channel Amplifier

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• 80 watts x 2 channel @ 4 ohm
• 120 watts x 2 channel @ 2 ohm
• Bridged: 220 watts x 1 channel @ 4 ohm
• Class D 2 ohm Stable 2-Channel-Channel Amplifier

Hertz Venezia V4 with NVX 4 Gauge Amp Kit

1160W RMS Venezia Series Class-D 4-Channel Marine Amplifier

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Hertz Venezia V4 with NVX 4 Gauge Amp Kit

1160W RMS Venezia Series Class-D 4-Channel Marine Amplifier

• 160 watts x 4 channel @ 4 ohm
• 290 watts x 4 channel @ 2 ohm
• Total RMS Power: 1160 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 160 watts x 4 channel @ 4 ohm
• 290 watts x 4 channel @ 2 ohm
• Total RMS Power: 1160 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

NVX - Worth the Envy - Direct to Consumer Car Audio

DC Audio 9.0k with NVX 1/0 Gauge Amp Kit

9000W Competition Series Class D Monoblock Amplifier

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DC Audio 9.0k with NVX 1/0 Gauge Amp Kit

9000W Competition Series Class D Monoblock Amplifier

• RMS Power: 2400W x 1 @ 4 ohm, 4800W x 1 @ 2 ohm, 9000W x 1 @ 1 ohm
• Strappable for Up to 18,000W of Power
• Variable Low Pass Filter

• Includes Amplifier Wiring Kit

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• RMS Power: 2400W x 1 @ 4 ohm, 4800W x 1 @ 2 ohm, 9000W x 1 @ 1 ohm
• Strappable for Up to 18,000W of Power
• Variable Low Pass Filter

• Includes Amplifier Wiring Kit

Wet Sounds SYN-DX 4 with NVX 4 Gauge Amp Kit

800W RMS DX-Series Bridgeable Full-Range 4-Channel Marine Amplifier

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Wet Sounds SYN-DX 4 with NVX 4 Gauge Amp Kit

800W RMS DX-Series Bridgeable Full-Range 4-Channel Marine Amplifier

• 125 Watts RMS x 4 @ 4 ohm
• 200 Watts RMS x 4 @ 2 ohm
• 400 Watts RMS x 2 @ 4 ohm
• Total RMS Power: 800 Watts
• Frequency Response: 20 - 20000 Hz
• Variable high-pass filter: 50 - 250 Hz, 12 dB/octave
• Variable low-pass filter: 50 - 250 Hz, 12 dB/octave
• Fuse Rating: 30 A x 2
• Includes Amplifier Wiring Kit

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• 125 Watts RMS x 4 @ 4 ohm
• 200 Watts RMS x 4 @ 2 ohm
• 400 Watts RMS x 2 @ 4 ohm
• Total RMS Power: 800 Watts
• Frequency Response: 20 - 20000 Hz
• Variable high-pass filter: 50 - 250 Hz, 12 dB/octave
• Variable low-pass filter: 50 - 250 Hz, 12 dB/octave
• Fuse Rating: 30 A x 2
• Includes Amplifier Wiring Kit

Diamond Audio DES400.4D with NVX 8 Gauge Amp Kit

680W RMS DES Series 4-Channel Full Range Class D Amplifier

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Diamond Audio DES400.4D with NVX 8 Gauge Amp Kit

680W RMS DES Series 4-Channel Full Range Class D Amplifier

• 100 watts x 4 channel @ 4 ohm
• 170 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 680 watts
• Latest High-Efficiency Full-Range Digital Topology
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 100 watts x 4 channel @ 4 ohm
• 170 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 680 watts
• Latest High-Efficiency Full-Range Digital Topology
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

DC Audio 1.2k - 1200W Class D Monoblock Amplifier with NVX 4 Gauge Amp Kit

1200W Competition Series Class D 1-Ohm Stable Monoblock Subwoofer Amplifier

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DC Audio 1.2k - 1200W Class D Monoblock Amplifier with NVX 4 Gauge Amp Kit

1200W Competition Series Class D 1-Ohm Stable Monoblock Subwoofer Amplifier

• RMS Power: 350W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Strappable for Up to 2400W of Power
• Variable Low Pass Filter
• Dimensions: 9.38" W x 16.5" L x 2.35" H
• Includes Amplifier Wiring Kit

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• RMS Power: 350W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Strappable for Up to 2400W of Power
• Variable Low Pass Filter
• Dimensions: 9.38" W x 16.5" L x 2.35" H
• Includes Amplifier Wiring Kit

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MTX TH750.1 with NVX 4 Gauge Amp Kit

750W RMS Class D Thunder Series Monoblock Car Amplifier (with Bass Remote)

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MTX TH750.1 with NVX 4 Gauge Amp Kit

750W RMS Class D Thunder Series Monoblock Car Amplifier (with Bass Remote)

• 250 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 750 watts x 1 channel @ 1 ohm
• Total RMS Power: 750 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 250 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 750 watts x 1 channel @ 1 ohm
• Total RMS Power: 750 watts
• Class D 1 ohm Stable Monoblock Amplifier

Cerwin Vega B55 with NVX 4 Gauge Amp Kit

1900 Watt 5-Channel Bomber Series Class D Ultra-Compact Amplifier

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Cerwin Vega B55 with NVX 4 Gauge Amp Kit

1900 Watt 5-Channel Bomber Series Class D Ultra-Compact Amplifier

• Peak Power: 1900 Watts
• RMS: 80 Watts x 4 + 200 Watts x 1 @ 4 ohm, 150 Watts x 4 + 350 Watts x 1 @ 2 ohm, Bridged: 300 Watts x 2 @ 4 ohm
• Class D IR Chipset with DirectFET Power Mosfet Output
• Wired remote bass level control included
• Ultra Compact High Density Aluminum Alloy Chassis
• Includes NVX XKIT46 4 Gauge Amp Wiring Kit

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• Peak Power: 1900 Watts
• RMS: 80 Watts x 4 + 200 Watts x 1 @ 4 ohm, 150 Watts x 4 + 350 Watts x 1 @ 2 ohm, Bridged: 300 Watts x 2 @ 4 ohm
• Class D IR Chipset with DirectFET Power Mosfet Output
• Wired remote bass level control included
• Ultra Compact High Density Aluminum Alloy Chassis
• Includes NVX XKIT46 4 Gauge Amp Wiring Kit

DC Audio 90.4 with NVX 4 Gauge Amp Kit

520W Competition Series 4-Channel Class AB Amplifier

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DC Audio 90.4 with NVX 4 Gauge Amp Kit

520W Competition Series 4-Channel Class AB Amplifier

• RMS Power: 90W x 4 @ 4 ohm, 130W x 4 @ 2 ohm
• Bridged: 250W x 2 @ 4 ohm
• Variable High and Low Pass Filters
• Dimensions: 9.38" W x 14" L x 2.35" H
• Includes Amplifier Wiring Kit

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• RMS Power: 90W x 4 @ 4 ohm, 130W x 4 @ 2 ohm
• Bridged: 250W x 2 @ 4 ohm
• Variable High and Low Pass Filters
• Dimensions: 9.38" W x 14" L x 2.35" H
• Includes Amplifier Wiring Kit

Diamond Audio MICRO84U with NVX 8 Gauge Amp Kit

600W RMS Micro Series 4-Channel Class-D Amplifier

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Diamond Audio MICRO84U with NVX 8 Gauge Amp Kit

600W RMS Micro Series 4-Channel Class-D Amplifier

• 80 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 80 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Diamond Audio DXM800.4D with NVX 8 Gauge Amp Kit

800W RMS DXM Series Class-D 4-Channel Marine Amplifier

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Diamond Audio DXM800.4D with NVX 8 Gauge Amp Kit

800W RMS DXM Series Class-D 4-Channel Marine Amplifier

• 125 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 125 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Wet Sounds STX Micro 1 with NVX 8 Gauge Amp Kit

600W RMS Class-D 1-Ohm Stable Monoblock Compact Amplifier

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Wet Sounds STX Micro 1 with NVX 8 Gauge Amp Kit

600W RMS Class-D 1-Ohm Stable Monoblock Compact Amplifier

• 250 Watts RMS x 1 @ 4 ohm
• 420 Watts RMS x 1 @ 2 ohm
• 600 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 600 Watts
• Frequency Response: 10 - 250Hz
• Dimensions: 4"W x 9.25"L x 1.5"H
• Includes Amplifier Wiring Kit

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• 250 Watts RMS x 1 @ 4 ohm
• 420 Watts RMS x 1 @ 2 ohm
• 600 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 600 Watts
• Frequency Response: 10 - 250Hz
• Dimensions: 4"W x 9.25"L x 1.5"H
• Includes Amplifier Wiring Kit

Cerwin-Vega S91100.5D + Free High Quality NVX Amp Kit

Stroker Series 5-Channel Car Amplifier

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Cerwin-Vega S91100.5D + Free High Quality NVX Amp Kit

Stroker Series 5-Channel Car Amplifier

• Cerwin Vega Stroker 5-channel Amplifier
• 150W x 4 chan. @ 4/2/1 Ω + 500W x 1 chan. @ 2/1 Ω
• 400W x 2 chan. @ 4/2 Ω + 500W x 1 @ 2 Ω
• Crossover: 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included

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• Cerwin Vega Stroker 5-channel Amplifier
• 150W x 4 chan. @ 4/2/1 Ω + 500W x 1 chan. @ 2/1 Ω
• 400W x 2 chan. @ 4/2 Ω + 500W x 1 @ 2 Ω
• Crossover: 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included

Stinger SPX1000X5 with NVX 8 Gauge Amp Kit

150W RMS Micro Class D 5-Channel Marine Amplifier

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Stinger SPX1000X5 with NVX 8 Gauge Amp Kit

150W RMS Micro Class D 5-Channel Marine Amplifier

• 95 x 4 @ 4 ohm Stereo - CH 1-4
• 275 x 1 @4 ohm - CH 5
• 150 x 4 @ 2 ohm Stero - CH 1-4
• 500 x 1 @ 2 ohm - CH 5
• Total RMS Power: 150 watts
• Class D 4 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $885.98
-46% $479.00

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• 95 x 4 @ 4 ohm Stereo - CH 1-4
• 275 x 1 @4 ohm - CH 5
• 150 x 4 @ 2 ohm Stero - CH 1-4
• 500 x 1 @ 2 ohm - CH 5
• Total RMS Power: 150 watts
• Class D 4 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Cerwin-Vega CVPRO2K4 with NVX 4 Gauge Amp Kit

1000W Peak (520W RMS) CVPRO Series Class-D 4-Channel Amplifier

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Cerwin-Vega CVPRO2K4 with NVX 4 Gauge Amp Kit

1000W Peak (520W RMS) CVPRO Series Class-D 4-Channel Amplifier

• 325 watts x 4 channel @ 4 ohm
• 520 watts x 4 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $623.98
-23% $479.98

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• 325 watts x 4 channel @ 4 ohm
• 520 watts x 4 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Cerwin-Vega CVPRO3K with NVX 1/0 Gauge Amp Kit

6000W Peak (2050W RMS) CVPRO Series Class-D Monoblock Amplifier with Bass Remote

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Cerwin-Vega CVPRO3K with NVX 1/0 Gauge Amp Kit

6000W Peak (2050W RMS) CVPRO Series Class-D Monoblock Amplifier with Bass Remote

• RMS Power: 1100W x 1 @ 4 ohm
• 2050W x 1 @ 2 ohm
• 3000W x 1 @ 1 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• 8.85"W 7.95 "L 2.61"H
• Includes Amplifier Wiring Kit

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List price $623.98
-25% $464.98

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• RMS Power: 1100W x 1 @ 4 ohm
• 2050W x 1 @ 2 ohm
• 3000W x 1 @ 1 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• 8.85"W 7.95 "L 2.61"H
• Includes Amplifier Wiring Kit

Cerwin-Vega VCU85 with Belva 4 Gauge Amp Kit

1900W Peak (950W RMS) Vega Series Class-D 5-Channel Amplifier

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Cerwin-Vega VCU85 with Belva 4 Gauge Amp Kit

1900W Peak (950W RMS) Vega Series Class-D 5-Channel Amplifier

• 80 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm + 350 watts x 1 channel @ 2 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 80 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm + 350 watts x 1 channel @ 2 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Hertz Venezia V4 Compact with NVX 4 Gauge Amp Kit

760W RMS Venezia Series Class-D 4-Channel Compact Marine Amplifier

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Hertz Venezia V4 Compact with NVX 4 Gauge Amp Kit

760W RMS Venezia Series Class-D 4-Channel Compact Marine Amplifier

• 110 watts x 4 channel @ 4 ohm
• 190 watts x 4 channel @ 2 ohm
• Total RMS Power: 760 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 110 watts x 4 channel @ 4 ohm
• 190 watts x 4 channel @ 2 ohm
• Total RMS Power: 760 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Cerwin-Vega SPRO2100.1D with Belva 1/0 Gauge Amp Kit

2100W Peak (2100W RMS) Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

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Cerwin-Vega SPRO2100.1D with Belva 1/0 Gauge Amp Kit

2100W Peak (2100W RMS) Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

• 900 Watts RMS x 1 @ 4 ohm
• 1400 Watts RMS x 1 @ 2 ohm
• 2100 Watts RMS x 1 @ 1 ohm, bridged
• Total Peak Power: 2100 Watts
• Built-in Low-Pass and Subsonic Filteres
• 0-12 dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.23" W x 18.03" L x 2.81" H

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• 900 Watts RMS x 1 @ 4 ohm
• 1400 Watts RMS x 1 @ 2 ohm
• 2100 Watts RMS x 1 @ 1 ohm, bridged
• Total Peak Power: 2100 Watts
• Built-in Low-Pass and Subsonic Filteres
• 0-12 dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.23" W x 18.03" L x 2.81" H

DS18 EXL-P2000X1D with Belva 4 Gauge Amp Kit

2000W RMS EXL Power Series Class-D Monoblock Amplifier with Bass Remote

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DS18 EXL-P2000X1D with Belva 4 Gauge Amp Kit

2000W RMS EXL Power Series Class-D Monoblock Amplifier with Bass Remote

• 800 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2000 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• Class D 1 Ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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Universal Icon Universal – fits most vehicles.

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• 800 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2000 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• Class D 1 Ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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