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1977 GMC C2500 Pickup

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

Overview 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 1977 GMC C2500 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.
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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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Pioneer GM-D9701 with Amplifier Wiring Kit

1200W RMS Class D Monoblock Amplifier w/ Wired Bass Boost Remote

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Pioneer GM-D9701 with Amplifier Wiring Kit

1200W RMS Class D Monoblock Amplifier w/ Wired Bass Boost Remote

• RMS: 500W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 2400W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB
• Class D Circuitry
• Includes Amplifier Wiring Kit
• Dimensions: 12-3/8"W x 7-7/8"D x 2-3/8"H

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• RMS: 500W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 2400W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB
• Class D Circuitry
• Includes Amplifier Wiring Kit
• Dimensions: 12-3/8"W x 7-7/8"D x 2-3/8"H

NVX VAD27001 (Open Box, Great)

2700W RMS Class D Monoblock Car/Marine/Powersports Amplifier with Bass Remote (Marine Certified)

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NVX VAD27001 (Open Box, Great)

2700W RMS Class D Monoblock Car/Marine/Powersports Amplifier with Bass Remote (Marine Certified)

• RMS: 1250 x 1 @ 4 ohm, 1950W x 1 @ 2 ohm, 2700W x 1 @ 1 ohm
• Total RMS Power: 2700W
• CEA-2006 Compliant
• Wired Bass Remote Included
• Efficient Class D Design
• Dimensions: 13.7"W x 5.4"D x 2.0H

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NVX XQA6001 (Open Box, Great)

600W RMS XQ-Series SQ Class D 1-Ohm Stable Monoblock Amplifier with X-Boost

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NVX XQA6001 (Open Box, Great)

600W RMS XQ-Series SQ Class D 1-Ohm Stable Monoblock Amplifier with X-Boost

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

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

Kicker 46CXA800.1 with Amp Kit and 3 Year Warranty

800W Peak (600W RMS) CX Series Class-D Monoblock Amplifier with 4 Gauge Amp Kit

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Kicker 46CXA800.1 with Amp Kit and 3 Year Warranty

800W Peak (600W RMS) CX Series Class-D Monoblock Amplifier with 4 Gauge Amp Kit

• 300 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• 800 Watts RMS x 1 @ 1 ohm
• Efficient Class-D Monoblock Amplifier
• KickEQ™ 6dB variable bass boost for those additional low frequencies
• FIT+™ (Fail-safe Integration Technology-PLUS) means it works with nearly every radio
• Amplifier wiring kit included

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• 300 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• 800 Watts RMS x 1 @ 1 ohm
• Efficient Class-D Monoblock Amplifier
• KickEQ™ 6dB variable bass boost for those additional low frequencies
• FIT+™ (Fail-safe Integration Technology-PLUS) means it works with nearly every radio
• Amplifier wiring kit included

Kenwood KAC-M5001 with NVX 8 Gauge Amp Kit

300W RMS KAC Series Class-D Monoblock Marine Amplifier

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Kenwood KAC-M5001 with NVX 8 Gauge Amp Kit

300W RMS KAC Series Class-D Monoblock Marine Amplifier

• 200 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
• Includes Amplifier Wiring Kit

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• 200 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
• Includes Amplifier Wiring Kit

Diamond Audio DMD250.1D with Belva 4 Gauge Amp Kit

250W RMS DMD Series Class-D Monoblock Amplifier

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Diamond Audio DMD250.1D with Belva 4 Gauge Amp Kit

250W RMS DMD Series Class-D Monoblock Amplifier

• 160 watts x 4 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Total RMS Power: 250 watts
• Dampening Factor: > 250
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 160 watts x 4 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Total RMS Power: 250 watts
• Dampening Factor: > 250
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Belva BB200ABv2 (Open Box, Good)

500W Peak Class A/B Monoblock Amplifier

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Belva BB200ABv2 (Open Box, Good)

500W Peak Class A/B Monoblock Amplifier

• Class A/B Monoblock Amplifier
• Adjustable Gain Controls
• Low-Pass Filter: 40-300Hz
• Bass Boost: +0-12DB
• One pair of preamp outputs
• Remote bass knob included

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Wet Sounds STX MICRO-1 (Like New (Open Box))

600W Peak Class D Stealth STX Series Compact Monoblock Marine and Powersports Amplifier

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Wet Sounds STX MICRO-1 (Like New (Open Box))

600W Peak Class D Stealth STX Series Compact Monoblock Marine and Powersports Amplifier

• 250 watts x 1 channel @ 4 ohm
• 420 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total Peak Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier

10% Off Open Box!
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-15% $365.49
$328.94 with coupon | Price details

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NVX VADM1 with Amplifier Wiring Kit

500W RMS Class D Monoblock Amplifier with Bass Remote

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NVX VADM1 with Amplifier Wiring Kit

500W RMS Class D Monoblock Amplifier with Bass Remote

• 500 Watt True RMS Output
• Marine Certified Monoblock Micro Class D Amplifier
• 180W x 1-Chan. @ 4 ohm
• 320W x 1-Chan. @ 2 ohm
• 500W x 1-Chan. @ 1 ohm
• Extremely Small Footprint
• Includes Amplifier Wiring Kit

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• 500 Watt True RMS Output
• Marine Certified Monoblock Micro Class D Amplifier
• 180W x 1-Chan. @ 4 ohm
• 320W x 1-Chan. @ 2 ohm
• 500W x 1-Chan. @ 1 ohm
• Extremely Small Footprint
• Includes Amplifier Wiring Kit

Deaf Bonce Apocalypse 1300.1 Pro with Belva 4 Gauge Amp Kit

1300W RMS Class D Apocalypse Atom Pro Series Monoblock Subwoofer Amplifier with Bass Remote

ATOM13001PRO_BAK42 big
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Deaf Bonce Apocalypse 1300.1 Pro with Belva 4 Gauge Amp Kit

1300W RMS Class D Apocalypse Atom Pro Series Monoblock Subwoofer Amplifier with Bass Remote

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

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

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Alpine KTA-200M (Like New (Open Box))

400W Peak (200W RMS) Class D Power Pack Series Monoblock Car Amplifier

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Alpine KTA-200M (Like New (Open Box))

400W Peak (200W RMS) Class D Power Pack Series Monoblock Car Amplifier

• 200 watts x 1 channel @ 4 ohm
• 200 watts x 1 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable Monoblock Amplifier

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• 200 watts x 1 channel @ 4 ohm
• 200 watts x 1 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable Monoblock Amplifier

Kenwood KAC-9106D w/Belva 1.0 Farad Capacitor + Belva 2000 Watt Handling Amp Kit

1000W RMS Class D Monoblock Car Amplifier w/ 1.0 Farad Capacitor & 4 AWG Amp Kit

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Kenwood KAC-9106D w/Belva 1.0 Farad Capacitor + Belva 2000 Watt Handling Amp Kit

1000W RMS Class D Monoblock Car Amplifier w/ 1.0 Farad Capacitor & 4 AWG Amp Kit

• Kenwood KAC-9106D Performance Series 1000W Class-D Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 4 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

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• Kenwood KAC-9106D Performance Series 1000W Class-D Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 4 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

MB Quart FA2-1500.1 with Amplifier Wiring Kit

1500W RMS Formula Series Class-D Monoblock Car Amplifier

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MB Quart FA2-1500.1 with Amplifier Wiring Kit

1500W RMS Formula Series Class-D Monoblock Car Amplifier

• 375 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
• Includes Amplifier Wiring Kit

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• 375 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
• Includes Amplifier Wiring Kit

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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

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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

Rockford Fosgate R2-750X1 with Amplifier Wiring Kit

Rockford Fosgate Prime 750 Watt MonoBlock Amplifier + NVX Premium Complete Amp Kit

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Rockford Fosgate R2-750X1 with Amplifier Wiring Kit

Rockford Fosgate Prime 750 Watt MonoBlock Amplifier + NVX Premium Complete Amp Kit

• 250 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• 750 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 500 Watts
• CEA-2006 Compliant • Rollback Protection

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• 250 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• 750 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 500 Watts
• CEA-2006 Compliant • Rollback Protection

Rockford Fosgate Power T750X1bd + FREE $100 Gift Card

750W Power Series Ultra Compact Class-BD Monoblock Amplifier

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Rockford Fosgate Power T750X1bd + FREE $100 Gift Card

750W Power Series Ultra Compact Class-BD Monoblock Amplifier

• 500 Watts RMS x 1 @ 4 ohm
• 750 Watts RMS x 1 @ 2 ohm
• 750 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1500 Watts
• CEA-2006 Compliant
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Dual extruded heat sinks
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Real time thermal sensing with Rollback technology
• Dimensions: 4.3"W x 8.3"L x 1.6"H

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• 500 Watts RMS x 1 @ 4 ohm
• 750 Watts RMS x 1 @ 2 ohm
• 750 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1500 Watts
• CEA-2006 Compliant
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Dual extruded heat sinks
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Real time thermal sensing with Rollback technology
• Dimensions: 4.3"W x 8.3"L x 1.6"H

Lowest price in 30 days

Rockford Fosgate Punch P300X1 + FREE $25 Gift Card

300W RMS Punch Series Monoblock Class AB Car Power Amplifier

P300X1, 25EGIFT big
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Rockford Fosgate Punch P300X1 + FREE $25 Gift Card

300W RMS Punch Series Monoblock Class AB Car Power Amplifier

• 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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Universal Icon Universal – fits most vehicles.

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12
List price $304.99
-18% $249.99

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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

Rockford PM100X1K + NVX XKIT82 8 Gauge Amp Wiring Kit

Two Compact Full-Range Monoblock Amplifiers 60 watts RMS x 1 (each)

PM100X1K, XKIT82 big
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Rockford PM100X1K + NVX XKIT82 8 Gauge Amp Wiring Kit

Two Compact Full-Range Monoblock Amplifiers 60 watts RMS x 1 (each)

• PM100X1K
• Punch Marine 100 Watt Full-Range Mono Amplifier (pair)
• Number of Channels: 1
• Frequency Response: 60Hz - 20kHz +/- 1.0dB
• Includes NVX XKIT82 8 Gauge Amp Wiring Kit

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shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

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60
List price $405.98
$389.98

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• PM100X1K
• Punch Marine 100 Watt Full-Range Mono Amplifier (pair)
• Number of Channels: 1
• Frequency Response: 60Hz - 20kHz +/- 1.0dB
• Includes NVX XKIT82 8 Gauge Amp Wiring Kit

Rockford Fosgate Power T500-1bdCP with Amplifier Wiring Kit

500W RMS Constant Power Series Class BD Monoblock Amplifier

T500-1bdCP, XKIT42 big
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Rockford Fosgate Power T500-1bdCP with Amplifier Wiring Kit

500W RMS Constant Power Series Class BD Monoblock Amplifier

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Dynamic Power Output: 690W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB at 45 Hz
• Ultra Efficient Class bD Circuitry
• Dimensions: 11-7/16"L x 8-3/16"W x 2-3/16"H

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shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

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140
List price $693.98
-17% $577.49

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Only 2 Left!

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• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Dynamic Power Output: 690W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB at 45 Hz
• Ultra Efficient Class bD Circuitry
• Dimensions: 11-7/16"L x 8-3/16"W x 2-3/16"H

Rockford PM100X1K + FREE $50 Gift Card

Two Compact Full-Range Monoblock Amplifiers 60 watts RMS x 1 (each)

PM100X1K, 50EGIFT big
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Rockford PM100X1K + FREE $50 Gift Card

Two Compact Full-Range Monoblock Amplifiers 60 watts RMS x 1 (each)

• PM100X1K
• Punch Marine 100 Watt Full-Range Mono Amplifier (pair)
• Number of Channels: 1
• Frequency Response: 60Hz - 20kHz +/- 1.0dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

14
List price $359.99
-14% $309.99

In stock

Only 3 Left!

Add to Cart

• PM100X1K
• Punch Marine 100 Watt Full-Range Mono Amplifier (pair)
• Number of Channels: 1
• Frequency Response: 60Hz - 20kHz +/- 1.0dB

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    FAQ for Monoblock Sub Amplifiers in 1977 C2500 Pickup

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 1977 GMC C2500 Pickup?

    A: Yes this page includes all the best Monoblock Sub Amplifiers that work in your C2500 Pickup.

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