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1984 Isuzu I-Mark

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Use our shopping filters to find the right 2/3/4-channel amp to power upgraded speakers properly.

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

Amps for Adding Speakers for 1984 Isuzu I-Mark

Some vehicles require an amp bypass module, a line-output converter like the NVX XLCA2 or AudioControl LC2i, or a DSP to integrate with your factory radio and avoid bass roll-off. Bass roll-off occurs when a factory radio's crossover is designed only for the original equipment speakers, resulting in a not complete signal being sent to your new aftermarket amp.

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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.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Punch Series (32)
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XFL Series (1)
XQ Series (1)
ZXI Series (1)
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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American Bass XFL-DC-4200

1500W Peak (720W RMS) Class D XFL Series 4 Channel Car Amplifier

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American Bass XFL-DC-4200

1500W Peak (720W RMS) Class D XFL Series 4 Channel Car Amplifier

• 100 watts x 4 channel @ 4 ohm
• 180 watts x 4 channel @ 2 ohm
• Bridged: 360 watts x 2 channel @ 4 ohm
• Total RMS Power: 720 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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DS18 FX4

3000W Peak (1000W RMS) Class D FX Series 4-Channel Car Amplifier with LED

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DS18 FX4

3000W Peak (1000W RMS) Class D FX Series 4-Channel Car Amplifier with LED

• 180 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

NVX XKIT44

$119.99

$83.99

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• 180 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Rockford Fosgate Punch P500X2 + FREE $50 Gift Card

500W RMS 2-Channel Amplifier (P500X.2)

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Rockford Fosgate Punch P500X2 + FREE $50 Gift Card

500W RMS 2-Channel Amplifier (P500X.2)

• 150W x 2 Chan. @ 4 ohm
• 250W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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• 150W x 2 Chan. @ 4 ohm
• 250W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

Rockford Fosgate Punch PM1000X5 with Amplifier Wiring Kit

1000W 5-Channel Powersports/Marine Amplifier

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Rockford Fosgate Punch PM1000X5 with Amplifier Wiring Kit

1000W 5-Channel Powersports/Marine Amplifier

• RMS: 75 watts x 4 chan. + 150 watts x 1 chan. @ 4 ohm, 125 watts x 4 chan. + 300 watts x 1 chan. @ 2 ohm
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards
• Includes NVX XKIT46 4 Gauge Amp Wiring Kit

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• RMS: 75 watts x 4 chan. + 150 watts x 1 chan. @ 4 ohm, 125 watts x 4 chan. + 300 watts x 1 chan. @ 2 ohm
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards
• Includes NVX XKIT46 4 Gauge Amp Wiring Kit

JBL Club A5055 (AMPCBA5055AM) + NVX XKIT46

Class AB + D High Performance 5-Channel Amplifier + NVX XKIT46 4 Gauge 6-Channel Amp Wirring Kit

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JBL Club A5055 (AMPCBA5055AM) + NVX XKIT46

Class AB + D High Performance 5-Channel Amplifier + NVX XKIT46 4 Gauge 6-Channel Amp Wirring Kit

• Class AB + D Amp Technology
• 4 Ohm: 50 Watts RMS x 4 + 320 Watts RMS x 1
• Variable Crossover and Bass Boost
• Variable High and Low-Pass Filters
• Full on Board Protection

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• Class AB + D Amp Technology
• 4 Ohm: 50 Watts RMS x 4 + 320 Watts RMS x 1
• Variable Crossover and Bass Boost
• Variable High and Low-Pass Filters
• Full on Board Protection

Alpine S2-A55V with Belva 4 Gauge Amp Kit

540W RMS S-Series Class-D 5-Channel Car Amplifier

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Alpine S2-A55V with Belva 4 Gauge Amp Kit

540W RMS S-Series Class-D 5-Channel Car Amplifier

• 40 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 60 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 120 watts x 2 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 540 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 5-Channel Amplifier

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• 40 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 60 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 120 watts x 2 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 540 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 5-Channel Amplifier

Kenwood eXcelon XR901-5 + NVX XKIT46

1800W Max (900W RMS) XR Series 2-ohm Stable Class-D 5-Channel Amplifier w/ Bass Knob Included + NVX Premium 4 Gauge 6-Channel Amp Wiring Kit

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Kenwood eXcelon XR901-5 + NVX XKIT46

1800W Max (900W RMS) XR Series 2-ohm Stable Class-D 5-Channel Amplifier w/ Bass Knob Included + NVX Premium 4 Gauge 6-Channel Amp Wiring Kit

• 60 Watts x 4, 400W x Sub Channel RMS @ 4 ohm
• 75 Watts RMS x 4, 600W x Sub Channel @ 2 ohm
• Total Peak Power: 1800 Watts
• CEA-2006 Compliant
• Remote Bass Knob Included
• Heavy Duty Aluminum Heatsink
• Dimensions:10-1/4" W x 6-5/8" L x 1" H

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• 60 Watts x 4, 400W x Sub Channel RMS @ 4 ohm
• 75 Watts RMS x 4, 600W x Sub Channel @ 2 ohm
• Total Peak Power: 1800 Watts
• CEA-2006 Compliant
• Remote Bass Knob Included
• Heavy Duty Aluminum Heatsink
• Dimensions:10-1/4" W x 6-5/8" L x 1" H

NVX MVPA4 (Open Box, Great)

600W RMS Marine-V Series 4-Channel Class D Compact Marine/Powersports/Motorcycle Amplifier

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NVX MVPA4 (Open Box, Great)

600W RMS Marine-V Series 4-Channel Class D Compact Marine/Powersports/Motorcycle Amplifier

• 4-Channel Micro Class D Amplifier
• 100W x 4-Chan. @ 4 ohm
• 150W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs

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• 4-Channel Micro Class D Amplifier
• 100W x 4-Chan. @ 4 ohm
• 150W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs

Pioneer GM-DX975 with Amplifier Wiring Kit

2000 Watts Class D 5-Channel Amplifier w/ Gold-plated RCA Terminals and Bass Boost Remote

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Pioneer GM-DX975 with Amplifier Wiring Kit

2000 Watts Class D 5-Channel Amplifier w/ Gold-plated RCA Terminals and Bass Boost Remote

• 75 Watts RMS x 4 @ 4 ohm + 350 watts RMS x 1
• 100 Watts RMS x 1 @ 2 ohm + 600 watts RMS x 1
• 1200 Watts RMS x 1 @ 1 ohm
• 5-channel operation
• CEA-2006 Compliant/Preamp Outputs/LPF
• HQ Sound Parts
• Gold-plated RCA connections
• Includes Amplifier Wiring Kit
• 12-7/16"W x 2"H x 7-7/8"D

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• 75 Watts RMS x 4 @ 4 ohm + 350 watts RMS x 1
• 100 Watts RMS x 1 @ 2 ohm + 600 watts RMS x 1
• 1200 Watts RMS x 1 @ 1 ohm
• 5-channel operation
• CEA-2006 Compliant/Preamp Outputs/LPF
• HQ Sound Parts
• Gold-plated RCA connections
• Includes Amplifier Wiring Kit
• 12-7/16"W x 2"H x 7-7/8"D

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Rockford Fosgate Punch P500X2 + NVX XLCA2 Line-Output-Converter + Amp Kit

500W RMS 2-Channel Amplifier (P500X.2) + NVX 2-Channel L.O.C + 4 Gauge Amp Kit

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Rockford Fosgate Punch P500X2 + NVX XLCA2 Line-Output-Converter + Amp Kit

500W RMS 2-Channel Amplifier (P500X.2) + NVX 2-Channel L.O.C + 4 Gauge Amp Kit

• 150W x 2 Chan. @ 4 ohm
• 250W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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-25% $461.99

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• 150W x 2 Chan. @ 4 ohm
• 250W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

NVX VAD11005 with Amplifier Wiring Kit

1100W Full Range Class D 5-Channel Car/Marine/Powersports Amplifier with Bass Remote

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NVX VAD11005 with Amplifier Wiring Kit

1100W Full Range Class D 5-Channel Car/Marine/Powersports Amplifier with Bass Remote

• 4 ohm: 80 watts x 4 chan. + 350 x 1 chan.
• 2 ohm: 125 watts x 4 chan. + 600 x 1 chan.
• Bridged, 4 ohm: 250 watts x 2 chan. + 600 x 1 chan.
• 5/4/2 Channel Operation
• Includes Amplifier Wiring Kit

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List price $599.98
-31% $414.98

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• 4 ohm: 80 watts x 4 chan. + 350 x 1 chan.
• 2 ohm: 125 watts x 4 chan. + 600 x 1 chan.
• Bridged, 4 ohm: 250 watts x 2 chan. + 600 x 1 chan.
• 5/4/2 Channel Operation
• Includes Amplifier Wiring Kit

Diamond Audio MICRO4V2 with NVX 1/0 Gauge Amp Kit

600W Peak Series Class-D 4-Channel Compact Amplifier

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Diamond Audio MICRO4V2 with NVX 1/0 Gauge Amp Kit

600W Peak Series Class-D 4-Channel Compact 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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-34% $399.99

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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

Rockford Fosgate R2-300X4 with NVX 4 Gauge Amp Kit

300W RMS Prime Series Class D 4-Channel Amplifier

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Rockford Fosgate R2-300X4 with NVX 4 Gauge Amp Kit

300W RMS Prime Series Class D 4-Channel Amplifier

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

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-14% $399.98

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

MTX MUD50-2

200W Peak (50W RMS) Class D MUD Series 2 Channel Marine and Powersports Amplifier

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MTX MUD50-2

200W Peak (50W RMS) Class D MUD Series 2 Channel Marine and Powersports Amplifier

• 25 watts x 4 channel @ 4 ohm
• 50 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 100 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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• 25 watts x 4 channel @ 4 ohm
• 50 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 100 watts
• Class D 2 ohm Stable 2-Channel Amplifier

NVX VAD22008v2 (Open Box, Great)

2200W RMS Full Range Class D 8-Channel Car/Marine/Powersports Amplifier

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NVX VAD22008v2 (Open Box, Great)

2200W RMS Full Range Class D 8-Channel Car/Marine/Powersports Amplifier

• 150 watts x 6 channel + 250W x2 @ 4 ohm
• 225 watts x 6 channel + 400W x 2 @ 2 ohm
• Bridged: 450 watts x 3 channel + 850W x1 @ 4 ohm
• Total RMS Power: 2200 watts
• Class D 2 ohm Stable 8-Channel-Channel Amplifier

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List price $539.99
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• 150 watts x 6 channel + 250W x2 @ 4 ohm
• 225 watts x 6 channel + 400W x 2 @ 2 ohm
• Bridged: 450 watts x 3 channel + 850W x1 @ 4 ohm
• Total RMS Power: 2200 watts
• Class D 2 ohm Stable 8-Channel-Channel Amplifier

Limited time!

NVX VADM2 Amplifier with Amplifier Wiring Kit

440W RMS Full Range Class D 2-Channel Car/Marine/Powersports Amplifier

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NVX VADM2 Amplifier with Amplifier Wiring Kit

440W RMS Full Range Class D 2-Channel Car/Marine/Powersports Amplifier

• 440 Watt True RMS Output!
• Marine Certified 2-Channel Micro Class D Amplifier
• 150W x 2-Chan. @ 4 ohm
• 220W x 2-Chan. @ 2 ohm
• 440W x 1-Chan. @ 4 ohm
• 3-Way System Protection
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint

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• 440 Watt True RMS Output!
• Marine Certified 2-Channel Micro Class D Amplifier
• 150W x 2-Chan. @ 4 ohm
• 220W x 2-Chan. @ 2 ohm
• 440W x 1-Chan. @ 4 ohm
• 3-Way System Protection
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint

Diamond Audio DES400.2D with NVX 8 Gauge Amp Kit

500W RMS DES Series Class-D 2-Channel Amplifier

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Diamond Audio DES400.2D with NVX 8 Gauge Amp Kit

500W RMS DES Series Class-D 2-Channel Amplifier

• 200 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Bridged: 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 200 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Bridged: 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Pioneer GM-DX975 with NVX 4 Gauge Amp Kit

2000W Peak (800W RMS) GM Series Class-D 5-Channel Amplifier with Remote Bass Knob

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Pioneer GM-DX975 with NVX 4 Gauge Amp Kit

2000W Peak (800W RMS) GM Series Class-D 5-Channel Amplifier with Remote Bass Knob

• 75 watts x 4 channel + 350 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 75 watts x 4 channel + 350 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Alpine KTA-450 with NVX 8 Gauge Amp Kit

4-Channel 200 Watt RMS Power Pack Amplifier

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Alpine KTA-450 with NVX 8 Gauge Amp Kit

4-Channel 200 Watt RMS Power Pack Amplifier

• Class D 4-channels Power Pack Amplifier
• Power Handling: 50W RMS x 4 @ 4ohm/45W RMS x 4 @ 2ohm
• Dynamic Peak Power (DPP)
• Frequency Response: 15-50 Hz
• CTA-2006 compliant
• Includes Amplifier Wiring Kit

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• Class D 4-channels Power Pack Amplifier
• Power Handling: 50W RMS x 4 @ 4ohm/45W RMS x 4 @ 2ohm
• Dynamic Peak Power (DPP)
• Frequency Response: 15-50 Hz
• CTA-2006 compliant
• Includes Amplifier Wiring Kit

NVX NDA6004 with Amp Wiring Kit

1200W Peak (600W RMS) N-Series Class-D 4-Channel Amplifier + NVX XKIT44 4 Gauge 4-Channel Premium Amp Wiring Kit

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NVX NDA6004 with Amp Wiring Kit

1200W Peak (600W RMS) N-Series Class-D 4-Channel Amplifier + NVX XKIT44 4 Gauge 4-Channel Premium Amp Wiring Kit

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes 4 Gauge Amp Wiring Kit

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• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes 4 Gauge Amp Wiring Kit

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 1984 I-Mark

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