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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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NVX MVPA4 with Amplifier Wiring Kit

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

MVPA4_XKIT84 big
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NVX MVPA4 with Amplifier Wiring Kit

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

• The size of a postcard with 400 Watts True RMS Output!
• MVP Series 4-Channel Micro Class D Amplifier
• 50W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• Includes Amplifier Wiring Kit

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• The size of a postcard with 400 Watts True RMS Output!
• MVP Series 4-Channel Micro Class D Amplifier
• 50W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• Includes Amplifier Wiring Kit

NVX VAD10004 + NVX XFLOC4 Line-Output-Converter + Amp Kit

1000W RMS Class D 4-Channel Amplifier + NVX 4-Channel L.O.C + 4 Gauge Amp Kit

VAD10004, XFLOC4, BAK44 big
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NVX VAD10004 + NVX XFLOC4 Line-Output-Converter + Amp Kit

1000W RMS Class D 4-Channel Amplifier + NVX 4-Channel L.O.C + 4 Gauge Amp Kit

• RMS: 150 x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged 500W x 2 @ 4 ohm
• Total RMS Power: 1000W
• CEA-2006 Compliant
• Efficient Full Range Class D Design
• Dimensions: 12.1"W x 5.4"D x 2.0H

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List price $439.72
-20% $351.97

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• RMS: 150 x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged 500W x 2 @ 4 ohm
• Total RMS Power: 1000W
• CEA-2006 Compliant
• Efficient Full Range Class D Design
• Dimensions: 12.1"W x 5.4"D x 2.0H

NVX VAD10001 v2 Amp, XKIT42 2-Channel Amplifier Wiring Kit

2000W Peak (1000W RMS) Class D Monoblock Car/Marine/Powersports Amplifier and Full Spec 4 Gauge 100% OFC 2-Channel Amplifier Wiring Kit

VAD10001_XKIT42 big
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NVX VAD10001 v2 Amp, XKIT42 2-Channel Amplifier Wiring Kit

2000W Peak (1000W RMS) Class D Monoblock Car/Marine/Powersports Amplifier and Full Spec 4 Gauge 100% OFC 2-Channel Amplifier Wiring Kit

  • NVX VAD10001 v2 2000W Peak Class D Monoblock Amplifier
  • Marine Certified for Car, Marine, and Powersports Use
  • Includes Wired Bass Remote for Precision Control
  • XKIT42 Full Spec 4 Gauge 100% OFC Wiring Kit
  • Complete 2-Channel Installation Solution with RCA Cables
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159
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-23% $292.87

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  • NVX VAD10001 v2 2000W Peak Class D Monoblock Amplifier
  • Marine Certified for Car, Marine, and Powersports Use
  • Includes Wired Bass Remote for Precision Control
  • XKIT42 Full Spec 4 Gauge 100% OFC Wiring Kit
  • Complete 2-Channel Installation Solution with RCA Cables
Limited time!

NVX VADM2 Amplifier with Amplifier Wiring Kit

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

VADM2, BKA82 big
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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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-30% $236.77

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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

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

NDA6004_XKIT44 big
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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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-33% $249.98

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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

Limited time!

NVX VADM1 with Amplifier Wiring Kit

500W RMS Class D Monoblock Amplifier with Bass Remote

XKIT82,VADM1 big
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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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-32% $229.98

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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

NVX VADM4 Amplifier with Amplifier Wiring Kit

400W RMS 4-Channel Car/Marine/Powersports Amplifier

VADM4, XKIT84 big
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NVX VADM4 Amplifier with Amplifier Wiring Kit

400W RMS 4-Channel Car/Marine/Powersports Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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-28% $249.98

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• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

NVX VAD10004 with Amplifier Wiring Kit

1000W RMS Full Range 4-Channel Amplifier

VAD10004, XIT44 big
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NVX VAD10004 with Amplifier Wiring Kit

1000W RMS Full Range 4-Channel Amplifier

• RMS: 150 x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged 500W x 2 @ 4 ohm
• Total RMS Power: 1000W
• CEA-2006 Compliant
• Efficient Full Range Class D Design
• Includes Amplifier Wiring Kit

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104
List price $491.98
-25% $369.98

In stock

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• RMS: 150 x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged 500W x 2 @ 4 ohm
• Total RMS Power: 1000W
• CEA-2006 Compliant
• Efficient Full Range Class D Design
• Includes Amplifier Wiring Kit

NVX VAD8402 v2 Amp, XLCA2 Converter + XKIT42 Amp Kit

840W RMS VAD Series 2-Channel Amplifier with 2-Channel Line Out Converter and Full Spec 4 Gauge OFC Amplifier Wiring Kit

VAD8402_XLCA2_XKIT42 big
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NVX VAD8402 v2 Amp, XLCA2 Converter + XKIT42 Amp Kit

840W RMS VAD Series 2-Channel Amplifier with 2-Channel Line Out Converter and Full Spec 4 Gauge OFC Amplifier Wiring Kit

  • NVX 840W RMS VAD Series Class-D 2-Channel Full-Range Car/Marine/Powersports Amplifier
  • 2-Channel Line Out Converter with xBOOST Technology and Remote Bass Knob
  • Full Spec 4 Gauge 100% OFC Oxygen Free Copper Wiring Kit
  • High-quality RCA cables supporting power levels up to 1500 Watts
  • Comprehensive bundle provides all necessary hardware for 2-Channel amp installation
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-24% $364.69

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  • NVX 840W RMS VAD Series Class-D 2-Channel Full-Range Car/Marine/Powersports Amplifier
  • 2-Channel Line Out Converter with xBOOST Technology and Remote Bass Knob
  • Full Spec 4 Gauge 100% OFC Oxygen Free Copper Wiring Kit
  • High-quality RCA cables supporting power levels up to 1500 Watts
  • Comprehensive bundle provides all necessary hardware for 2-Channel amp installation

NVX VAD8402 v2 Amp, XKIT42 Amp Kit

840W RMS VAD Series 2-Channel Full-Range Amplifier with Full Spec 4 Gauge 100% OFC Oxygen Free Copper 2-Channel Amplifier Wiring Kit and RCA

VAD8402_XKIT42 big
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NVX VAD8402 v2 Amp, XKIT42 Amp Kit

840W RMS VAD Series 2-Channel Full-Range Amplifier with Full Spec 4 Gauge 100% OFC Oxygen Free Copper 2-Channel Amplifier Wiring Kit and RCA

  • NVX VAD8402 v2 840W RMS Class-D 2-Channel Full-Range Amplifier
  • Versatile power for Car, Marine, and Powersports applications
  • XKIT42 Full Spec 4 Gauge 100% Oxygen Free Copper Wiring Kit
  • Complete 2-channel amplifier installation solution with RCA
  • High-performance setup supporting amplifiers up to 1500 Watts
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138
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-26% $314.70

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  • NVX VAD8402 v2 840W RMS Class-D 2-Channel Full-Range Amplifier
  • Versatile power for Car, Marine, and Powersports applications
  • XKIT42 Full Spec 4 Gauge 100% Oxygen Free Copper Wiring Kit
  • Complete 2-channel amplifier installation solution with RCA
  • High-performance setup supporting amplifiers up to 1500 Watts
Limited time!

NVX MVPA2 with Amplifier Wiring Kit

Marine 2-Channel Bridgeable Compact Marine Amplifier

MVPA2, XKIT82 big
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NVX MVPA2 with Amplifier Wiring Kit

Marine 2-Channel Bridgeable Compact Marine Amplifier

• 200 Watts RMS x 2 @ 4 ohm
• 300 Watts RMS x 2 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Micro Amplifier
• Weatherproof Amplifier
• Includes Amplifier Wiring Kit

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Add to Cart

• 200 Watts RMS x 2 @ 4 ohm
• 300 Watts RMS x 2 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Micro Amplifier
• Weatherproof Amplifier
• Includes Amplifier Wiring Kit

NVX NBA201 with Amplifier Wiring Kit

1400W Peak (700W) RMS N-Series Class A/B 2-Channel Amplifier

NBA201, BAK42BK big
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NVX NBA201 with Amplifier Wiring Kit

1400W Peak (700W) RMS N-Series Class A/B 2-Channel Amplifier

• 200 watts x 2 channel @ 4 ohm
• 350 watts x 2 channel @ 2 ohm
• Bridged: 1400 watts x 1 channel @ 4 ohm
• Total RMS Power: 700 watts
• CEA-2006 Compliant
• Includes Amplifier Wiring Kit

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-60% $124.48

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• 200 watts x 2 channel @ 4 ohm
• 350 watts x 2 channel @ 2 ohm
• Bridged: 1400 watts x 1 channel @ 4 ohm
• Total RMS Power: 700 watts
• CEA-2006 Compliant
• Includes Amplifier Wiring Kit

 
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