MB Quart ONX2.100

400W ONYX Series 2-Channel Amplifier (ONX-2.100)

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This item has been discontinued

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Success is a Measurement of Quality and Power

The success of any car audio amplifier depends on system quality and construction, ease of installation and configuration, and sound enhancing features. MB Quart engineers built the all new Onyx series amplifiers from the ground up to be an affordable amplifier with the audiophile and performance enthusiast in mind. This series is composed of value-packed class A/B amplifiers that boast affordability without sacrifice to power or quality. All Onyx Amplifiers come clothed in a beautiful new age piano black finish which accents interiors and brings a whole new level of sophistication to swallow. To match, the line of Onyx Speakers shows off the same piano black finish applied to their polypropylene cone woofers. It’s a perfect match every time.

Speaking of features, Onyx amplifiers bring the full tuning spectrum to your fingertips with variable high-pass, low-pass and subsonic filters built-in. To increase endurance, MB Quart designed Onyx amplifiers with military grade printed circuit boards and built-in system diagnostics that keep these amps running strong. High speed MOSFET output devices are used in the power supply to give you the best watts-per-dollar ratio. It’s not hard to see how success has been written all over these amplifiers, though with a piano finish that looks that good, we know you will be staring.

  • ONYX Series 2-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 100 watts x 2 chan.
    • 2 ohms: 200 watts x 2 chan.
    • Bridged, 4 ohms: 400 watts x 1 chan.
  • CEA-2006 compliant amplifier
  • PWM (Pulse Width Modulated) MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz
  • 2/1 channel operation
  • Unbalanced RCA input jack
  • Preamp RCA outputs to daisy chain multiple amps
  • 4-Way System Protection circuitry (DC, thermal, overload, and speaker short protection)
  • Piano black gloss finish with illuminated logo
  • Heavy duty aluminum alloy convection heatsink for superb heat dissipation
  • Silver-plated RCA level inputs
  • Silver-plated screw terminals
  • Input sensitivity:
    • Low level: 200mV-6V
  • Variable high-pass filter (60-13,000 Hz, 24 dB/octave)
  • Variable low-pass filter (30-250 Hz, 24 dB/octave)
  • Damping factor: >180
  • Frequency response: 10-45,000 Hz
  • Dimensions: 11-3/4"L x 9"W x 2-1/2"H
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

100 watts x 2 channels
RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

200 watts x 2 channels
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

400 watts x 1 channels

Amplifier Specifications

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.

AB
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.
2
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.

400 watts
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.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.05%
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.
No
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.
1 pair
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.

Low-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

60 - 13,000 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

30 - 250 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
>92 dB
Channel Separation
Also referred to as crosstalk. The amount of interference on one stereo channel caused by the leaking of the other stereo channel. The higher the rating in decibels (dB), the better the Channel Separation.
>80 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 12 dB
Bass/Gain Remote
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.
No
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
20A x 2 
CEA-2006 Compliant
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.

Yes

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
53%
4 Star
47%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.3
Value
4.7
Features
4.3
Design
4.7
Usability
4.5
Harry Rahiman

Canada

Overall
Durability
Value
Features
Design
Usability
MB Quart ONX2.100

March 12, 2014

So far i've had this amp for about 1 mpnth in my car, it's a great little amp drives my front RE Audio SR 6.5c really well. First of all i don't listen to loud volumes, i listen to a variety of music from classical to pop. On instrumental jazz all i can say is wow, the detail is great. The RE Audio's are a great speaker match with this amp I have'nt had any issues with it yet. This amp was recommened to me by the staff at Sonic as a great value amp in my budget point. I would recommend this product to anyone who is on a budget and requires a decent amp.

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david

queen creek, AZ

Overall
Durability
Value
Features
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Usability
Mb quart amps are loud!

January 27, 2014

Have this amp wired to a 12 at 4 ohm mono and it sounds great. Rattles my car but not so bad I can't use the mirrors. Excellent amp from an even better place sonic!!!

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Thomas

Egg Harbor City, NJ

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Value
Features
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Usability
smooth looking

January 7, 2014

Very nice amplifier, nice weight and unique look. Very satisfied so far, hasn't gotten warm yet

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Tip

chillicothe, ohio

Overall
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Value
Features
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Usability
Good sound quality

September 18, 2013

Best performance for the price I have found so far. Hooked to a set of component 5x7 with crossover and tweeters, sounds awesome. Built well and looks great too. Would recomend it for any application

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Alec

Detroit, MI

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Value
Features
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Usability
Great amp, can refuse to turn on sometimes though.

September 18, 2013

I got this amp to power my coaxial speakers, and they sound great. This amp puts out some awesome power and I was really surprised by it. Usually I go for something a little higher end, but the price was unbeatable, I've been impressed. I have had a few problems with it though. Occasionally when I turn on my car, the amp won't turn on. But for 97% of the time, it's great!

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Pablo

Canada

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Durability
Value
Features
Design
Usability
Excellent buy

September 17, 2013

Excellent value for the money. I like the size,they are not too small or too big and I was able to mount it in a out of the way location in my car and has plenty of punch to boot.

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Crow

Fort Lee, VA

Overall
Durability
Value
Features
Design
Usability
Great Deal

August 9, 2013

The product is great, shipped fast and could not beat the price. I would recommend this to my friends

0 of 0 found this helpful

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Whitefox

New straitsville ohio

Overall
Durability
Value
Features
Design
Usability
Great CEA rated amp for the money.

July 3, 2013

I recently purchased this amp as a gift for my fiancee and I would have to say that its a great starter amp for the money. I have a polk audio 1540mm 15" subwoofer hooked up to this amp bridged at 4-ohms and it hits hard and accurate so I believe the rated 400-watts rms bridged. Pros: > Nice piano black gloss finish > cea rated > silver plated terminals (silver is a better conductor than gold or platnuim. >small so its easy to mount in discreet areas like under a seat etc... >low THD at Rated RMS Power 0.05% > 4-Way System Protection circuitry (DC, thermal, overload, and speaker short protection) Cons: > no speaker level inputs >setting gain lpf and hpf is a little tricky sense its not a digital read just an analog knob. All in all, A great amp for only $70-90 and is CEA rated. Just make sure to set your gain properly with a multimeter or an o-scope. If you have any questions I will gladly answer them :)

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Jeremy

Holiday, FL

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Value
Features
Design
Usability
Great amp for the $$!!!

May 11, 2013

I have this amp running a set of MB Quart PVL268 components in my Ford Escape. The amp has plenty of power and the sound quality is great for a amp of this price. The quality is top notch as well. My only complaint is the glossy finish. Its a fingerprint magnet. I highly recommend this amp to anyone looking to power a set of good components or some subs. It does put out 400 watts rms x 1 @ 4ohms, & maybe a little more. I hooked it up to a Alpine Type R that was 600 watts rms & it pushed it every bit as good as my friends Hifonics 600 watt monoblock...

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John

St. Louis, MO

Overall
Durability
Value
Features
Design
Usability
great product

April 2, 2013

I'm using these as front speakers in my RX-8 with an MB Quart 4-channel amp. They handle the power very well and provide a excellent sound quality.

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Dwaine

Webb, AL

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Durability
Value
Features
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Usability
Awesome amp!

March 3, 2013

Got this hooked up to my Sony 12" Xplod sub bridged at 400 watts and it's awesome! It replaced am MTX TC4004 which is only 200 watts bridged. Major difference. I was able to raise the output level on my Maxxsonics MX3 all the way up and it has increased my db output. I don't pay attention to the voltage settings printed on equipment. They're pretty much for reference only so I always go by my ears when setting my levels. There's no distortion and it has increased my overall sound. I have an ONYX 4.80 on the way to use on my highs as well. My one complaint would be the plastic mounting feet but it's a good thing they use plastic because I mounted the amp to the back of my seat which is metal. The beautiful piano black paint gives it a sweet look. I've always been a fan of Maxxsonics equipment and have maintained the MB QUART reputation. Definitely recommend this amp!

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Ace

San Antonio, TX

Overall
Durability
Value
Features
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Usability
MB Quart Amplifier

February 13, 2013

I purchased 3 of these amplifiers and am quite pleased with the output they provide. the sound is strong, clean and warm. I am just a guy that likes good music, not anyone that is looking to beat down the neighbor's house with a trunk full of subs. You can't go wrong with these amps and the price is amazing for what you get.

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Orlando

South Lyon, MI

Overall
Durability
Value
Features
Design
Usability
To the prior review...

July 30, 2012

But is says 400 watts rms "bridged"... For the 1st review are you using it bridged and does it really perform as 400 watt rms bridged amp for a sub?

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nemo

Mocksville, NC

Overall
Durability
Value
Features
Design
Usability
wrong info

July 15, 2012

To the other reviewer, this amp is 200 watts at 4 ohm and 400 watts at 2 ohms. Please get your facts correct before you write a review.

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Mike Jones

Palmton, CA

Overall
Durability
Value
Features
Design
Usability
You get what you pay for!

June 16, 2012

This one of those "you get what you pay for" deals. It's not a bad amp, but don't expect the world either. For it being 400 watts rms at 4 ohms, it seems like 200 if that. I have a kicker class D 400 watts at 2 ohms, and what a difference. Should have just saved the extra coin and got another one.

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Accessory Tools and Products

Accessories added

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

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

Your Price $59.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $151.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

Your Price $7.99

Small Universal Remote Level Bass Control

The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.

Your Price $11.99

StreetWires FB4

4 AWG / 4 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Kicker KI24 K-Series RCA Audio Interconnect Cable

4 Meters (13 ft.) 2-Channel K-Series RCA Audio Interconnect Cable

Your Price $16.95

NVX XWS1225 12 AWG Speaker Wire

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

Your Price $39.99

NVX XWS1625 16 AWG Speaker Wire

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

Your Price $13.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

The Install Bay IB-CAP1F

True 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $37.99

e2 ECAP1 by Scosche - Mid-Level 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $49.99

Rockford Fosgate RFC1D - Top of the Line 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $99.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

Browse 1 question and 1 answer
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Why did you choose this?
Sonic Electronix Store
matches my 4 channel and I love the 4 channel
casey h on Jul 30, 2014

Product Summary

Manufacturer

Model Number

ONX2.100

UPC

806576218166

Weight

7.35lbs

Internal SKU

onx2100

Internal Product ID

44472

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: MB Quart ONX2.100