MB Quart Water-resistant, Marine & Off-Road Amplifiers at Sonic Electronix

MB Quart Water-resistant, Marine & Off-Road Amplifiers

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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.

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 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.

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.

The lowest impedance the amplifier will handle when it is not bridged.
The lowest impedance the amplifier will handle when it is bridged.
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 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.
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.

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.

Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

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.
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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MB Quart NA3-560.4

Nautic 560W 4 Channel Marine Audio Amplifier

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Nautic 560W 4 Channel Marine Audio Amplifier

• 70 Watts Peak x 4 @ 4 ohms
• 140 Watts Peak x 4 @ 2 ohms
• Total Peak Power: 560 Watts
• CEA-2006 Compliant
• NMMA Certified
• Marine Grade Protection
• LED system protection circuit diagnostics

MB Quart NA3-560.4

Nautic 560W 4 Channel Marine Audio Amplifier

In stock

Only 2 Left!

$309.99 (3.23% off)
$299.99
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  • FREE 8 Gauge 4 Channel Wiring Kit with Select Amps!

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Nautic 560W 4 Channel Marine Audio Amplifier

$299.99

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NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$23.99

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NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$29.99

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NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

$99.99

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MB Quart NA3-1000.5

Nautic Marine 1000 Watt 5 Channel Marine Amplifier with Bass Remote

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Nautic Marine 1000 Watt 5 Channel Marine Amplifier with Bass Remote

• 75 Watts Peak x 4 + 100 Watts x 1 @ 4 ohms
• 150 Watts Peak x 4 + 200 Watts x 1 @ 2 ohms
• Total Peak Power: 1000 Watts
• CEA-2006 Compliant
• NMMA Certified
• Audiophile Marine Standard
• LED system protection circuit diagnostics
• Class SQ & Class Q1

MB Quart NA3-1000.5

Nautic Marine 1000 Watt 5 Channel Marine Amplifier with Bass Remote

In stock

$449.99 (4.44% off)
$429.99

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Nautic Marine 1000 Watt 5 Channel Marine Amplifier with Bass Remote

$429.99

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NVX XIV65 V-Series Interconnect Cable

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$34.99

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NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$29.99

Add
NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

$99.99

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MB Quart NA3-600.6

Nautic Marine 600 Watt 6 Channel Marine Amplifier

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Nautic Marine 600 Watt 6 Channel Marine Amplifier

• 50 Watts Peak x 6
• 100 Watts Peak x 6 @ 2 ohms
• Total Peak Power: 600 Watts
• CEA-2006 Compliant
• NMMA Certified
• Audiophile Marine Standard
• LED system protection circuit diagnostics
• Class SQ

MB Quart NA3-600.6

Nautic Marine 600 Watt 6 Channel Marine Amplifier

In stock

Only 1 Left!

$429.99 (6.98% off)
$399.99

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Nautic Marine 600 Watt 6 Channel Marine Amplifier

$399.99

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Stinger SI4612 4000 Series Interconnect Cable

12 ft. 6-Channel 4000 Series Audio Interconnect Cable

$24.99

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NVX XWS1650 Speaker Wire

50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$29.99

Add
NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

$99.99

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MB Quart NA2-400.1

400W Peak NA2 Series Class-D Monoblock 2-Ohm Stable Amplifier

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400W Peak NA2 Series Class-D Monoblock 2-Ohm Stable Amplifier

• 200 Watts RMS x 1 @ 4 ohms
• 400 Watts RMS x 1 @ 2 ohms
• Total Peak Power: 400 Watts
• Marine and Powersports Certified
• Built-In Low-Pass and Subsonic Filters
• 0 - +12 Bass Boost
• Aluminum Heatsink
• Dimensions: 3.7" W x 5.51" L x 1.77"

1
MB Quart NA2-400.1

400W Peak NA2 Series Class-D Monoblock 2-Ohm Stable Amplifier

OUT OF STOCK

$179.99 (44.45% off)
$99.99

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400W Peak NA2 Series Class-D Monoblock 2-Ohm Stable Amplifier

$99.99

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Stinger SK46101

10 AWG Amplifier Power & Signal Installation Kit

$30.99

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NVX XLCA2

2 Channel Line Out Converter with xBOOST & 3-year warranty*!

$79.95

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AudioControl Epicenter-InDash

If you want the best bass possible and a way to measure how loud your system is playing

$249.99

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MB Quart NA2-400.2

400W Peak NA2 Series Class-D 2-Channel 2-Ohm Stable Amplifier

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400W Peak NA2 Series Class-D 2-Channel 2-Ohm Stable Amplifier

• 100 Watts RMS x 2 @ 4 ohms
• 200 Watts RMS x 2 @ 2 ohms
• Total Peak Power: 400 Watts
• Marine and Powersports Certified
• Built-In Low-Pass and Hi-Pass Filters
• Aluminum Heatsink
• Dimensions: 3.7" W x 5.51" L x 1.77"

4
MB Quart NA2-400.2

400W Peak NA2 Series Class-D 2-Channel 2-Ohm Stable Amplifier

OUT OF STOCK

$139.99 (35.72% off)
$89.99

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400W Peak NA2 Series Class-D 2-Channel 2-Ohm Stable Amplifier

$89.99

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Stinger SK46101

10 AWG Amplifier Power & Signal Installation Kit

$30.99

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NVX XLCA2

2 Channel Line Out Converter with xBOOST & 3-year warranty*!

$79.95

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NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft 2-Channel RCA Audio Interconnect Cable with Twisted Pair Construction

$18.99

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MB Quart NA2-500.5

500W Peak NA2 Series Class-D 5-Channel 2-Ohm Stable Powersports Amplifier

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500W Peak NA2 Series Class-D 5-Channel 2-Ohm Stable Powersports Amplifier

• 40 watts x 4 chan., 100 watts x 1 chan. @ 4 ohms
• 80 watts x 4 chan., 200 watts x 1 chan. @ 2 ohms
• Total Peak Power: 500 Watts
• Marine and Powersports Certified
• Built-In Low-Pass and Subsonic Filters
• Aluminum Heatsink
• Dimensions: 3.7" W x 8.46" L x 1.77"

1
MB Quart NA2-500.5

500W Peak NA2 Series Class-D 5-Channel 2-Ohm Stable Powersports Amplifier

OUT OF STOCK

$299.99 (53.35% off)
$139.95

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500W Peak NA2 Series Class-D 5-Channel 2-Ohm Stable Powersports Amplifier

$139.95

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

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NVX XIV65 V-Series Interconnect Cable

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$34.99

Add
NVX XWS1650 Speaker Wire

50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$29.99

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MB Quart NA2-400RC

NAUTIC 400 Watt Amplifier 2 Channel Powersports Amp for Polaris RIDE COMMAND source unit.

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NAUTIC 400 Watt Amplifier 2 Channel Powersports Amp for Polaris RIDE COMMAND source unit.

• IPX67 Rated
• Full Range Class D Amplifier
• Integrates with Ride Command
• Quick Disconnect Wires

MB Quart NA2-400RC

NAUTIC 400 Watt Amplifier 2 Channel Powersports Amp for Polaris RIDE COMMAND source unit.

OUT OF STOCK

$249.99 (32.00% off)
$169.99

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NAUTIC 400 Watt Amplifier 2 Channel Powersports Amp for Polaris RIDE COMMAND source unit.

$169.99

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NVX XLCA2

2 Channel Line Out Converter with xBOOST & 3-year warranty*!

$79.95

Add
NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft 2-Channel RCA Audio Interconnect Cable with Twisted Pair Construction

$18.99

Add
NVX XWS1650 Speaker Wire

50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$29.99

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Don't see the accessory you're looking for?
View all available accessories for the MB Quart NA2-400RC.
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