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1998 GMC K1500

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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 1998 GMC K1500

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)
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Alpha Series (1)
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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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Memphis MJP3000.1

3000W RMS Class D MOJO Pro Series Monoblock Car Amplifier with Bass Remote

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Memphis MJP3000.1

3000W RMS Class D MOJO Pro Series Monoblock Car Amplifier with Bass Remote

• 1275 watts x 1 channel @ 4 ohm
• 2100 watts x 1 channel @ 2 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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DS18 SMD-8500.1D

8500W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

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DS18 SMD-8500.1D

8500W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

• 3300 watts x 1 channel @ 4 ohm
• 5700 watts x 1 channel @ 2 ohm
• 8500 watts x 1 channel @ 1 ohm
• Total RMS Power: 8500 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Wired bass level remote control included
• IR Remote Control for LED patterns and colors included

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MTX Thunder TH1500.1

1500W RMS Class D Thunder Series Monoblock Car Amplifier with Bass Remote

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MTX Thunder TH1500.1

1500W RMS Class D Thunder Series Monoblock Car Amplifier with Bass Remote

• 500 watts x 1 channel @ 4 ohm
• 1000 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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Deaf Bonce Apocalypse ASA 8000.1

8000W RMS Class D Apocalypse Sport Series Monoblock Car Amplifier

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Deaf Bonce Apocalypse ASA 8000.1

8000W RMS Class D Apocalypse Sport Series Monoblock Car Amplifier

• 2950 watts x 1 channel @ 4 ohm
• 4530 watts x 1 channel @ 2 ohm
• 8020 watts x 1 channel @ 1 ohm
• Bridged: 16040 watts @ 2 ohm
• Total RMS Power: 8000 watts
• Class D 1 ohm Stable Monoblock Subwoofer Amplifier

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Crunch CRA-1500.1

1500W RMS Class D CRA Series Monoblock Car Amplifier with Bass Remote

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Crunch CRA-1500.1

1500W RMS Class D CRA Series Monoblock Car Amplifier with Bass Remote

• 650 watts x 1 channel @ 4 ohm
• 750 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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Hifonics Brutus BRL2000.1

2000W RMS Class D Brutus BRL Series Monoblock Car Amplifier with Bass Remote

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Hifonics Brutus BRL2000.1

2000W RMS Class D Brutus BRL Series Monoblock Car Amplifier with Bass Remote

• 700 watts x 1 channel @ 4 ohm
• 1200 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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List price $399.00
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Rockford Fosgate M5-1000X1

1000W Peak (750W RMS) Class BD M5 Series Monoblock Marine Amplifier

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Rockford Fosgate M5-1000X1

1000W Peak (750W RMS) Class BD M5 Series Monoblock Marine Amplifier

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

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NVX XCA9K

9000W RMS Class D XC-Series Monoblock Korean Competition Amplifier with Bass Remote

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NVX XCA9K

9000W RMS Class D XC-Series Monoblock Korean Competition Amplifier with Bass Remote

• 3000 watts x 1 channel @ 4 ohm
• 6000 watts x 1 channel @ 2 ohm
• 9000 watts x 1 channel @ 1 ohm
• Total RMS Power: 9000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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DS18 FRP-2.5K/TI

2500W RMS Class D FRP Series Monoblock Car Amplifier with Bass Remote (Titanium)

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DS18 FRP-2.5K/TI

2500W RMS Class D FRP Series Monoblock Car Amplifier with Bass Remote (Titanium)

• 700 watts x 1 channel @ 4 ohm
• 1300 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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JBL Club A1000 (AMPCBA1000AM)

200W Peak (1000W RMS) Class D Club Series Compact Monoblock Amplifier with Bass Remote

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JBL Club A1000 (AMPCBA1000AM)

200W Peak (1000W RMS) Class D Club Series Compact Monoblock Amplifier with Bass Remote

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

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DS18 ZR2000.1D

6000W Peak (2000W RMS) Class D ZR Series Monoblock Car Amplifier with Bass Remote

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DS18 ZR2000.1D

6000W Peak (2000W RMS) Class D ZR Series Monoblock Car Amplifier with Bass Remote

• 800 watts x 1 channel @ 4 ohm
• 1300 watts x 1 channel @ 2 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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$395.95

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Hifonics BG-1000.1

1000W RMS Class D Brutus BG Series Monoblock Car Amplifier with Bass Remote

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Hifonics BG-1000.1

1000W RMS Class D Brutus BG Series Monoblock Car Amplifier with Bass Remote

• 550 watts x 1 channel @ 4 ohm
• 800 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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• 550 watts x 1 channel @ 4 ohm
• 800 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

Diamond Audio MICRO81U

600W RMS Class D Micro8U Series Monoblock Car Amplifier (with Bass Remote)

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Diamond Audio MICRO81U

600W RMS Class D Micro8U Series Monoblock Car Amplifier (with Bass Remote)

• 400 watts x 1 channel @ 2 ohms
• 600 watts x 1 channel @ 1 ohm
• Bridged: 240 watts x 1 channel @ 4 ohms
• Bridged: 400 watts x 1 channel @ 2 ohms
• Bridged: 600 watts x 1 channel @ 1 ohms
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier

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Precision Power i1000.1

1000W RMS Class D iON Series Monoblock Car Amplifier

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Precision Power i1000.1

1000W RMS Class D iON Series Monoblock Car Amplifier

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

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List price $274.99
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Hifonics A1200.1D Alpha

1200W RMS Class D Alpha Series Monoblock Car Amplifier

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Hifonics A1200.1D Alpha

1200W RMS Class D Alpha Series Monoblock Car Amplifier

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

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List price $285.00
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Hifonics BG-1400.1

1400W RMS Class D Brutus BG Series Monoblock Car Amplifier with Bass Remote

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Hifonics BG-1400.1

1400W RMS Class D Brutus BG Series Monoblock Car Amplifier with Bass Remote

• 750 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• 1400 watts x 1 channel @ 1 ohm
• Total RMS Power: 1400 watts
• Class D 1 ohm Stable Monoblock Amplifier

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List price $259.99
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• 750 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• 1400 watts x 1 channel @ 1 ohm
• Total RMS Power: 1400 watts
• Class D 1 ohm Stable Monoblock Amplifier

Deaf Bonce Machete MFA-1.1000

1000W RMS Class D Machete Series Monoblock Amplifier with Bass Remote

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Deaf Bonce Machete MFA-1.1000

1000W RMS Class D Machete Series Monoblock Amplifier with Bass Remote

• 430 watts x 1 channel @ 4 ohm
• 710 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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$169.90

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Crunch GP-1500.1 Amplifier + Free Amp Wiring Kit

1500 Watts Ground Pounder Mono Subwoofer Car Amplifier

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Crunch GP-1500.1 Amplifier + Free Amp Wiring Kit

1500 Watts Ground Pounder Mono Subwoofer Car Amplifier

• Variable Electronic Crossover
• Bass Remote Included
• Subsonic Filter
• Switchable Bass Boost

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-39% $134.99

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• Variable Electronic Crossover
• Bass Remote Included
• Subsonic Filter
• Switchable Bass Boost

Limited time!

NVX XCA6K

6000W RMS Class D XC-Series Monoblock Korean Competition Amplifier with Bass Remote

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NVX XCA6K

6000W RMS Class D XC-Series Monoblock Korean Competition Amplifier with Bass Remote

• 2000 watts x 1 channel @ 4 ohm
• 4000 watts x 1 channel @ 2 ohm
• 6000 watts x 1 channel @ 1 ohm
• Total RMS Power: 6000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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PRV Audio RS900 BASS 2 Ohm

900W RMS Class D RS Series Monoblock Car Amplifier

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PRV Audio RS900 BASS 2 Ohm

900W RMS Class D RS Series Monoblock Car Amplifier

• 710 watts x 1 channel @ 4 ohm
• 900 watts x 1 channel @ 2 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable Monoblock Amplifier

2+ offers available
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    FAQ for Monoblock Sub Amplifiers in 1998 K1500

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 1998 GMC K1500?

    A: Yes this page includes all the best Monoblock Sub Amplifiers that work in your K1500.

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