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2001 GMC Sierra 2500

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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 2001 GMC Sierra 2500

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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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 SRPM750.1D with Belva 8 Gauge Amp Kit

750W RMS Class-D Monoblock 2-Ohm Stable Marine Amplifier w/ Bass Knob Included

SRPM750.1D, XKIT82 big
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Cerwin Vega SRPM750.1D with Belva 8 Gauge Amp Kit

750W RMS Class-D Monoblock 2-Ohm Stable Marine Amplifier w/ Bass Knob Included

• 300 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• 750W x 1 @ 1 Ohm
• Conformal Coating Protects Against Moisture
• Aluminum Heatsink

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• 300 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• 750W x 1 @ 1 Ohm
• Conformal Coating Protects Against Moisture
• Aluminum Heatsink

Rockford Fosgate Prime R500X1D Amplifier + 1.0 Farad Capacitor + 4 Gauge Amp Kit

500W RMS Prime Series Class D Monoblock Amplifier + 1.0 Farad Capacitor + 4 AWG Amp Kit

BAK42BK,BB1D,R500X1D big
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Rockford Fosgate Prime R500X1D Amplifier + 1.0 Farad Capacitor + 4 Gauge Amp Kit

500W RMS Prime Series Class D Monoblock Amplifier + 1.0 Farad Capacitor + 4 AWG Amp Kit

• Rockford Fosgate R500X1D 500W RMS Prime Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 2 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

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• Rockford Fosgate R500X1D 500W RMS Prime Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 2 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

Kenwood eXcelon XR1001-1 + High Quality NVX Amp Kit

2000W Max (1000W RMS) XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included

XR1001-1, XKIT42 big
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Kenwood eXcelon XR1001-1 + High Quality NVX Amp Kit

2000W Max (1000W RMS) XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included

• 500 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 12-5/8" W x 6-5/8" L x 2" H

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• 500 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 12-5/8" W x 6-5/8" L x 2" H

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Rockford Fosgate Punch P300X1 + Free Belva BAK82 8 Gauge Amp Wiring Kit

300W RMS Punch Series Monoblock Class AB Car Power Amplifier + Belva BAK82

P300X1, BAK82BL big
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Rockford Fosgate Punch P300X1 + Free Belva BAK82 8 Gauge Amp Wiring Kit

300W RMS Punch Series Monoblock Class AB Car Power Amplifier + Belva BAK82

• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• Built-in NOMAD Circuit Protects Amplifier
• Tuned Bass EQ: 0 to +18 dB
• Cast Aluminum Heatsink with Dynamic Thermal Management
• Dimensions: 9-7/8"L x 7-3/4"W x 2-3/8"H

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• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• Built-in NOMAD Circuit Protects Amplifier
• Tuned Bass EQ: 0 to +18 dB
• Cast Aluminum Heatsink with Dynamic Thermal Management
• Dimensions: 9-7/8"L x 7-3/4"W x 2-3/8"H

Alpine KTA-200M with NVX 8 Gauge Amp Kit

200W RMS Class D Monoblock Subwoofer Amplifier

KTA-200M, XKIT82 big
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Alpine KTA-200M with NVX 8 Gauge Amp Kit

200W RMS Class D Monoblock Subwoofer Amplifier

• Power stack Capable
• CTA-2006 Compliant
• Fits in the open space behind Alpine’s iLX-W650
• 100W x 1 RMS
• 200W x 1 RMS
• 400W x 1 DPP
• Includes Amplifier Wiring Kit

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• Power stack Capable
• CTA-2006 Compliant
• Fits in the open space behind Alpine’s iLX-W650
• 100W x 1 RMS
• 200W x 1 RMS
• 400W x 1 DPP
• Includes Amplifier Wiring Kit

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Rockford Fosgate Punch P500X1BD with Amplifier Wiring Kit

500W RMS Punch Series Monoblock Class BD Car Power Amplifier + NVX 4 Gauge Wiring Kit

P500X1BD, XKIT42 big
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Rockford Fosgate Punch P500X1BD with Amplifier Wiring Kit

500W RMS Punch Series Monoblock Class BD Car Power Amplifier + NVX 4 Gauge Wiring Kit

• RMS: 150W x 1 @ 4 ohm, 300W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Tuned Bass EQ: 0 to +18 dB
• Super Efficient Class BD Circuitry
• Dimensions: 11"L x 7-3/4"W x 2-3/8"H

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• RMS: 150W x 1 @ 4 ohm, 300W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Tuned Bass EQ: 0 to +18 dB
• Super Efficient Class BD Circuitry
• Dimensions: 11"L x 7-3/4"W x 2-3/8"H

Alpine S2-A60M with Belva 4 Gauge Amp Kit

600W RMS S-Series Class-D Monoblock Car Amplifier

S2-A60M, BAK42 big
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Alpine S2-A60M with Belva 4 Gauge Amp Kit

600W RMS S-Series Class-D Monoblock Car Amplifier

• 330 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Class D 2 ohm Stable Monoblock Amplifier

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• 330 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Class D 2 ohm Stable Monoblock Amplifier

Infinity Reference 6001A with Belva 8 Gauge Amp Kit

600W RMS Reference Series Class D Monoblock Amplifier with Remote Bass Knob

REFERENCE6001A_BAK82 big
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Infinity Reference 6001A with Belva 8 Gauge Amp Kit

600W RMS Reference Series Class D Monoblock Amplifier with Remote Bass Knob

• 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
• Includes Amplifier Wiring Kit

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• 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
• Includes Amplifier Wiring Kit

DS18 ZR1500.1D with NVX 4 Gauge Amp Kit

4500W RMS ZR Series Class-D Monoblock Amplifier

ZR15001D_XKIT42 big
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DS18 ZR1500.1D with NVX 4 Gauge Amp Kit

4500W RMS ZR Series Class-D Monoblock Amplifier

• 550 watts x 1 channel @ 4 ohm
• 950 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 4500 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 550 watts x 1 channel @ 4 ohm
• 950 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 4500 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Sound Extreme by ECOXGEAR SEI-AMP30011 with NVX 8 Gauge Amp Kit

300W RMS Class-D Monoblock High Definition Marine Amplifier

A30011_XKIT82 big
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Sound Extreme by ECOXGEAR SEI-AMP30011 with NVX 8 Gauge Amp Kit

300W RMS Class-D Monoblock High Definition Marine Amplifier

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

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• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

Massive Audio T2 with Amplifier Wiring Kit

800 Watts RMS @ 1 Ohm Monoblock Amplifier + NVX 4 Gauge Amp Wiring Kit

T2, XKIT42 big
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Massive Audio T2 with Amplifier Wiring Kit

800 Watts RMS @ 1 Ohm Monoblock Amplifier + NVX 4 Gauge Amp Wiring Kit

• 200 Watts RMS x 1 @ 4 ohm
• 400 Watts RMS x 1 @ 2 ohm
• 800 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1600 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 4.25"W x 7.99"L x1.6 "H
• Includes Amplifier Wiring Kit

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• 200 Watts RMS x 1 @ 4 ohm
• 400 Watts RMS x 1 @ 2 ohm
• 800 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1600 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 4.25"W x 7.99"L x1.6 "H
• Includes Amplifier Wiring Kit

Deaf Bonce MFA 1.1000 with Belva 4 Gauge Amp Kit

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

MFA11000_BAK42 big
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Deaf Bonce MFA 1.1000 with Belva 4 Gauge Amp Kit

1000W RMS Class D Machete Series Monoblock Subwoofer 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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• 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

Massive Audio T2 with Belva 8 Gauge Amp Kit

1600W Peak (800W RMS) Trident Series Class D 1 Ohm Powersports Monoblock Amplifier

MAT2_BAK82 big
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Massive Audio T2 with Belva 8 Gauge Amp Kit

1600W Peak (800W RMS) Trident Series Class D 1 Ohm Powersports Monoblock Amplifier

• 200 watts x 1 channel @ 4 ohm
• 400 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
• Includes Amplifier Wiring Kit

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• 200 watts x 1 channel @ 4 ohm
• 400 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
• Includes Amplifier Wiring Kit

Cerwin-Vega CVPRO5K with NVX 1/0 Gauge Amp Kit

10000W Peak (5000W RMS) CV Pro Series Class D Monoblock Amplifier with Bass Remote

CVPRO5K_XKIT02 big
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Cerwin-Vega CVPRO5K with NVX 1/0 Gauge Amp Kit

10000W Peak (5000W RMS) CV Pro Series Class D Monoblock Amplifier with Bass Remote

• 1900 watts x 1 channel @ 4 ohm
• 3000 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
• Includes Amplifier Wiring Kit

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• 1900 watts x 1 channel @ 4 ohm
• 3000 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
• Includes Amplifier Wiring Kit

DC Audio 10.0k with NVX 1/0 Gauge Amp Kit

10,000W Competition Series 1-Ohm Stable Class-D Monoblock Amplifier

100K_XKIT02 big
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DC Audio 10.0k with NVX 1/0 Gauge Amp Kit

10,000W Competition Series 1-Ohm Stable Class-D Monoblock Amplifier

• RMS Power: 3000W x 1 @ 4 ohm, 5500W x 1 @ 2 ohm, 10,000W x 1 @ 1 ohm
• Strappable for Up to 20,000W of Power
• Variable Low Pass Filter
• Dimensions: 11.5" W x 37" L x 2.6" H
• Includes Amplifier Wiring Kit

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• RMS Power: 3000W x 1 @ 4 ohm, 5500W x 1 @ 2 ohm, 10,000W x 1 @ 1 ohm
• Strappable for Up to 20,000W of Power
• Variable Low Pass Filter
• Dimensions: 11.5" W x 37" L x 2.6" H
• Includes Amplifier Wiring Kit

JBL ClubA1000 (Club A 1000) + 30% off High Quality NVX Amp Kit

High Performance Mono-block Subwoofer Amplifier

AMPCBA1000AM, XKIT42 big
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JBL ClubA1000 (Club A 1000) + 30% off High Quality NVX Amp Kit

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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• 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

Rockford Fosgate Punch P500X1BD + Rockford Fosgate RFK4I 4 Gauge 2-Ch Amp Kit

500W RMS Punch Series Monoblock Class BD Car Power Amplifier

P500X1BD, RFK4I big
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Rockford Fosgate Punch P500X1BD + Rockford Fosgate RFK4I 4 Gauge 2-Ch Amp Kit

500W RMS Punch Series Monoblock Class BD Car Power Amplifier

• RMS: 150W x 1 @ 4 ohm, 300W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Tuned Bass EQ: 0 to +18 dB
• Super Efficient Class BD Circuitry
• Dimensions: 11"L x 7-3/4"W x 2-3/8"H
• Includes Rockford Fosgate RFK4I 4 Gauge 2-Ch Amp Kit

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• RMS: 150W x 1 @ 4 ohm, 300W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Tuned Bass EQ: 0 to +18 dB
• Super Efficient Class BD Circuitry
• Dimensions: 11"L x 7-3/4"W x 2-3/8"H
• Includes Rockford Fosgate RFK4I 4 Gauge 2-Ch Amp Kit

Lowest price in 30 days

DS18 ZR2000.1D with NVX 1/0 Gauge Amp Kit

6000W RMS ZR Series Class-D Monoblock Amplifier

ZR20001D_XKIT02 big
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DS18 ZR2000.1D with NVX 1/0 Gauge Amp Kit

6000W RMS ZR Series Class-D Monoblock Amplifier

• 800 watts x 4 channel @ 4 ohm
• 1300 watts x 4 channel @ 2 ohm
• 2000 watts x 4 channel @ 1 ohm
• Total RMS Power: 6000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 800 watts x 4 channel @ 4 ohm
• 1300 watts x 4 channel @ 2 ohm
• 2000 watts x 4 channel @ 1 ohm
• Total RMS Power: 6000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Alpine KTA-30MW with NVX 8 Gauge Amp Kit

600W Peak (300W RMS) Power Pack Series Class-D Monoblock Weather Resistant Amplifier

KTA-30MW, XKIT82 big
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Alpine KTA-30MW with NVX 8 Gauge Amp Kit

600W Peak (300W RMS) Power Pack Series Class-D Monoblock Weather Resistant Amplifier

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

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

Diamond Audio MICRO81U with NVX 8 Gauge Amp Kit

600W RMS Full Range Class-D Monoblock Digital Amplifier

MICRO81U_XKIT82 big
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Diamond Audio MICRO81U with NVX 8 Gauge Amp Kit

600W RMS Full Range Class-D Monoblock Digital Amplifier

• 175 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 175 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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    FAQ for Monoblock Sub Amplifiers in 2001 Sierra 2500

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 2001 GMC Sierra 2500?

    A: Yes this page includes all the best Monoblock Sub Amplifiers that work in your Sierra 2500.

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