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1990 Isuzu Pickup

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Single, 1-channel monoblock sub amplifiers for when you add a sub

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

Amplifiers for Powering a Sub for 1990 Isuzu Pickup

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.
Power Series (17)
Punch Series (16)
Prime Series (14)
FRP Series (12)
BX Series (9)
Apocalypse Atom Pro Series (8)
CVP Series (7)
JD Series (7)
RD Series (7)
SALT Series (7)
Brutus BRL Series (6)
Competition Series (6)
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Godfather Series (6)
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Stroker Pro Series (6)
V Series (6)
XDM Series (6)
Club Series (5)
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HD Series (5)
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Brutus BG Series (4)
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N-Series (2)
PowerHouse Shredder Series (2)
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S Series (2)
SFB Series (2)
Stealth STX Series (2)
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Terminator Series (2)
VEGA Series (2)
VFL Comp Series (2)
VFL Rebel Series (2)
VFL Stealth Series (2)
Alpha Series (1)
AP Series (1)
Colossus Classic Series (1)
COLOSSUS Series (1)
Compact Mean Machine Series (1)
CVPM Series (1)
Discus Series (1)
DPower Series (1)
DRVN Series (1)
DXM Series (1)
EV Series (1)
Excelon Motorsports Series (1)
FX Series (1)
Gen-X (1)
GM Digital Series (1)
HCCA Series (1)
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HED Series (1)
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Key Series (1)
KM Series (1)
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LC Series (1)
M Series (1)
M5 Series (1)
Marine Series (1)
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MHD Series (1)
Micro8U Series (1)
MicroV2 Series (1)
MINI BANG Series (1)
MOJO Pro Series (1)
MotorSport Series (1)
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Performance Series (1)
Picasso-Nano Series (1)
Primo Series (1)
Primus Series (1)
PS Series (1)
Q-Series (1)
Reserve Series (1)
RTX Series (1)
SAEv4 Series (1)
Sinister Series (1)
SPL Show Series (1)
Stage GT Series (1)
Status Series (1)
Stealth Bomber Series (1)
Street Reference (1)
Venezia Series (1)
Warhorse Series (1)
X Series (1)
XFL 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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Kicker CXA400.1 (46CXA4001T)

400W RMS Class D CX-Series Monoblock Car Amplifier

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Kicker CXA400.1 (46CXA4001T)

400W RMS Class D CX-Series Monoblock Car Amplifier

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

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Sundown Audio SALT-1

1000W RMS Class D SALT Series Monoblock Car Amplifier with Bass Remote (A-SALT1)

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Sundown Audio SALT-1

1000W RMS Class D SALT Series Monoblock Car Amplifier with Bass Remote (A-SALT1)

• 250 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• 2000 watts x 1 channel @ 2 ohm Bridged
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Hertz SP 1.900

1000W RMS Class D SPL Show Series Monoblock Car, Motorcycle, Marine, and Powersports Amplifier

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Hertz SP 1.900

1000W RMS Class D SPL Show Series Monoblock Car, Motorcycle, Marine, and Powersports Amplifier

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

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Kicker 46CXA4001 with Amplifier Wiring Kit

400W RMS CX-Series Class-D Monoblock Amplifier

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Kicker 46CXA4001 with Amplifier Wiring Kit

400W RMS CX-Series Class-D Monoblock Amplifier


• 150 Watts RMS x 1 @ 4 ohm
• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Includes Amplifier Wiring Kit

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• 150 Watts RMS x 1 @ 4 ohm
• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Includes Amplifier Wiring Kit

JL Audio RD1500/1

1500W RMS Class D RD Series Monoblock Car Amplifier

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JL Audio RD1500/1

1500W RMS Class D RD Series Monoblock Car Amplifier

• 750 watts x 1 channel @ 4 ohm
• 1500 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Kicker KPX500.1 (51KPX5001)

750W Peak (500W RMS) Class D KPX Series Monoblock Motorcycle Amplifier

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Kicker KPX500.1 (51KPX5001)

750W Peak (500W RMS) Class D KPX Series Monoblock Motorcycle Amplifier

• 150 watts x 1 channel @ 4 ohm
• 300 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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• 150 watts x 1 channel @ 4 ohm
• 300 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

Diamond Audio HX800.1D

800W RMS Class D Hex Series Monoblock Car Amplifier (with Bass Remote)

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Diamond Audio HX800.1D

800W RMS Class D Hex Series Monoblock Car Amplifier (with Bass Remote)

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

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JL Audio RD500/1

500W RMS Class D RD Series Monoblock Car Amplifier

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JL Audio RD500/1

500W RMS Class D RD Series Monoblock Car Amplifier

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

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American Bass VFL Comp 2.5K (VFLCOMP-2.5K)

2500W RMS Class D VFL Comp Series Monoblock Car Amplifier (with Bass Remote)

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American Bass VFL Comp 2.5K (VFLCOMP-2.5K)

2500W RMS Class D VFL Comp Series Monoblock Car Amplifier (with Bass Remote)

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

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NVX XKIT02

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Sundown Audio SIA-2500D (A-SIA2500)

2500W RMS Class D SIA Series Monoblock Car Amplifier

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Sundown Audio SIA-2500D (A-SIA2500)

2500W RMS Class D SIA Series Monoblock Car Amplifier

• 2000 watts x 1 channel @ 4 ohm
• 2500 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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Kicker WXA3600.1 (49WXA36001)

5000W Peak Class D Warhorse Series Monoblock Car Amplifier

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Kicker WXA3600.1 (49WXA36001)

5000W Peak Class D Warhorse Series Monoblock Car Amplifier

• 1400 watts x 1 channel @ 4 ohm
• 2500 watts x 1 channel @ 2 ohm
• 3600 watts x 1 channel @ 1 ohm
• Total Peak Power: 5000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Rockford Fosgate R500X1D Amplifier + Free Belva BAK42BK 4 Gauge Amp Kit

R500X1D 500W RMS Prime Series Class D Monoblock Amplifier 4 Gauge Wiring Kit with 2-Channel RCA Interconnects

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Rockford Fosgate R500X1D Amplifier + Free Belva BAK42BK 4 Gauge Amp Kit

R500X1D 500W RMS Prime Series Class D Monoblock Amplifier 4 Gauge Wiring Kit with 2-Channel RCA Interconnects

• R500X1D 500W RMS Prime Series Class D Monoblock Amplifier
• BAK42 Complete 4 Gauge Amplifier Wiring Kit with 2-Channel RCA Interconnects (CCA Wiring)

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• R500X1D 500W RMS Prime Series Class D Monoblock Amplifier
• BAK42 Complete 4 Gauge Amplifier Wiring Kit with 2-Channel RCA Interconnects (CCA Wiring)

Alpine S2-A60M

600W RMS Class D S-Series Monoblock Car Amplifier

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Alpine S2-A60M

600W RMS Class D S-Series Monoblock Car Amplifier

• 330 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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Deaf Bonce Apocalypse ATOM-2000.1 PRO

2600W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

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Deaf Bonce Apocalypse ATOM-2000.1 PRO

2600W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

• 610 watts x 1 channel @ 4 ohm
• 1280 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

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Sundown Audio SIA-3500D V2 (A-SIAV23500)

3500W RMS Class D SIA Series Monoblock Car Amplifier

Save 10% with Code: Holiday10View Terms
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Sundown Audio SIA-3500D V2 (A-SIAV23500)

3500W RMS Class D SIA Series Monoblock Car Amplifier

• 2600 watts x 1 channel @ 4 ohm
• 3300 watts x 1 channel @ 2 ohm
• 3500 watts x 1 channel @ 1 ohm
• Total RMS Power: 3500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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JL Audio HD1200/1

1200W RMS Class D HD Series Monoblock Car Amplifier

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JL Audio HD1200/1

1200W RMS Class D HD Series Monoblock Car Amplifier

• 1200 watts x 1 channel @ 4 ohm
• 1200 watts x 1 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1.5 ohm Stable Monoblock Amplifier

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Rockford Fosgate R500X1D 500W RMS + 4 Gauge Amp Kit

500W RMS Prime Series Class D Monoblock Amplifier + 4 Gauge Full Spec CCA Amplifier Wiring Kit for Systems up to 650 Watts

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Rockford Fosgate R500X1D 500W RMS + 4 Gauge Amp Kit

500W RMS Prime Series Class D Monoblock Amplifier + 4 Gauge Full Spec CCA Amplifier Wiring Kit for Systems up to 650 Watts

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Remote PLC (Punch Level Control) Included
• Efficient Class-D circuit topology
• 4 Gauge Power Amplifier Installation Kit
• Ideal for Systems Up to 650 Watts
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 2-Channel Twisted RCA Cables

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• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Remote PLC (Punch Level Control) Included
• Efficient Class-D circuit topology
• 4 Gauge Power Amplifier Installation Kit
• Ideal for Systems Up to 650 Watts
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 2-Channel Twisted RCA Cables

Sundown Audio SIA-5000D

5000W RMS Class D SIA Series Monoblock Car Amplifier

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Sundown Audio SIA-5000D

5000W RMS Class D SIA Series Monoblock Car Amplifier

• 3400 watts x 1 channel @ 4 ohm
• 4950 watts x 1 channel @ 2 ohm
• 5000 watts x 1 channel @ 1 ohm
• Total RMS Power: 5000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Belva BXD4K

4000W Peak BX-Series Class-D Monoblock Car Audio Amplifier with Bass Remote

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Belva BXD4K

4000W Peak BX-Series Class-D Monoblock Car Audio Amplifier with Bass Remote

• 1000 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 4000 watts x 1 channel @ 1 ohm
• Total Peak Power: 4000 watts
• Class D 1 ohm Stable Monoblock

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FREE Belva Amp Kit at Checkout!
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Kicker KEY500.1 (47KEY500.1)

500W RMS KEY Series Monoblock Smart Amplifier with Automatic EQ and Processor

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Kicker KEY500.1 (47KEY500.1)

500W RMS KEY Series Monoblock Smart Amplifier with Automatic EQ and Processor

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

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