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  1. Home
  2. MB Quart Store
  3. Discontinued MB Quart Car Audio & Electronics
  4. Discontinued MB Quart Car Amplifiers
  5. Discontinued MB Quart Monoblock Amplifiers

Discontinued MB Quart Monoblock Amplifiers

Experience deep, powerful bass with MB Quart's Monoblock Amplifiers.

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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.
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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MB Quart DA1-1800.1

1800W Peak (1000W RMS) Discus Series Class-D Monoblock 1-Ohm Stable Amplifier

DA1-1800.1 big DISCONTINUED
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MB Quart DA1-1800.1

1800W Peak (1000W RMS) Discus Series Class-D Monoblock 1-Ohm Stable Amplifier

• Max: 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Variable Low-Pass & Subsonic Filters
• Bass Boost: 0 ~ 12 dB
• Focused mass aluminum heat sinks
• 9.00" W x 15.40" L x 2.20" H

• Max: 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Variable Low-Pass & Subsonic Filters
• Bass Boost: 0 ~ 12 dB
• Focused mass aluminum heat sinks
• 9.00" W x 15.40" L x 2.20" H

** LAST ONE LEFT! ** MB Quart RAA1000

Reference Series Monoblock Amplifier (RAA 1000)

RAA1000 big DISCONTINUED
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** LAST ONE LEFT! ** MB Quart RAA1000

Reference Series Monoblock Amplifier (RAA 1000)

1000 watt RMS monoblock amplifier

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1000 watt RMS monoblock amplifier

MB Quart ONX1.1000D

1000W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1000D)

ONX1.1000D big DISCONTINUED
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MB Quart ONX1.1000D

1000W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1000D)

ONYX Series Monoblock Class D Car Amplifier • 1000W x 1 Chan @ 1 Ohm • 750W x 1 Chan @ 2 Ohm • Dual Speaker Terminals • Preamp RCA Outputs • 4-Way System Protection Circuitry • Piano Black Gloss Finish

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ONYX Series Monoblock Class D Car Amplifier • 1000W x 1 Chan @ 1 Ohm • 750W x 1 Chan @ 2 Ohm • Dual Speaker Terminals • Preamp RCA Outputs • 4-Way System Protection Circuitry • Piano Black Gloss Finish

MB Quart XA1-500.1

500W Monoblock X-Line Series Class SQ A/B Amplifier

XA1-500.1 big DISCONTINUED
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MB Quart XA1-500.1

500W Monoblock X-Line Series Class SQ A/B Amplifier

• RMS: 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Elaborate preamplifier with extended control
• Frequency Response: 15 - 250 Hz

4

• RMS: 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Elaborate preamplifier with extended control
• Frequency Response: 15 - 250 Hz

MB Quart ONX1.1600D (Factory Refurbished)

1600W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1600D)

ONX1.1600D-2 big DISCONTINUED
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MB Quart ONX1.1600D (Factory Refurbished)

1600W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1600D)

• ONYX Series Monoblock Class D Car Amplifier
• 1600W x 1 Chan @ 1 Ohm
• 1100W x 1 Chan @ 2 Ohm
• Dual Speaker Terminals
• Preamp RCA Outputs
• 4-Way System Protection Circuitry
• Piano Black Gloss Finish

• ONYX Series Monoblock Class D Car Amplifier
• 1600W x 1 Chan @ 1 Ohm
• 1100W x 1 Chan @ 2 Ohm
• Dual Speaker Terminals
• Preamp RCA Outputs
• 4-Way System Protection Circuitry
• Piano Black Gloss Finish

MB Quart ONX1.1000D (Factory Refurbished)

1000W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1000D)

ONX1.1000D big DISCONTINUED
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MB Quart ONX1.1000D (Factory Refurbished)

1000W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1000D)

• Item Condition: Factory Refurbished
• ONYX Series Monoblock Class D Car Amplifier • 1000W x 1 Chan @ 1 Ohm • 750W x 1 Chan @ 2 Ohm • Dual Speaker Terminals • Preamp RCA Outputs • 4-Way System Protection Circuitry • Piano Black Gloss Finish

2

• Item Condition: Factory Refurbished
• ONYX Series Monoblock Class D Car Amplifier • 1000W x 1 Chan @ 1 Ohm • 750W x 1 Chan @ 2 Ohm • Dual Speaker Terminals • Preamp RCA Outputs • 4-Way System Protection Circuitry • Piano Black Gloss Finish

MB Quart DSC 1500.1D (DSC1500.1D)

1500W RMS, Discus Series Class D Monoblock Amplifier (DSC1500.1D)

DSC-1500.1D big DISCONTINUED
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MB Quart DSC 1500.1D (DSC1500.1D)

1500W RMS, Discus Series Class D Monoblock Amplifier (DSC1500.1D)

Discus Series Class D Monoblock Car Amplifier • 375W x 1 chan. @ 4 ohm • 750W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • Unbalanced RCA inputs • Damping Factor: >180 • Subsonic Filter (15-35 Hz)

20

Discus Series Class D Monoblock Car Amplifier • 375W x 1 chan. @ 4 ohm • 750W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • Unbalanced RCA inputs • Damping Factor: >180 • Subsonic Filter (15-35 Hz)

MB Quart FX1.700-RB (Factory Refurbished)

700 Watt RMS Formula Series Monoblock Car Amplifier

FX1700 big DISCONTINUED
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MB Quart FX1.700-RB (Factory Refurbished)

700 Watt RMS Formula Series Monoblock Car Amplifier

• 350 Watts RMS x 1 @ 4 ohm
• 700 Watts RMS x 1 @ 2 ohm
• Frequency Response: 10 - 300 Hz
• Wired remote bass level control included
• Variable Bass Boost: 0 to +9 dB bass boost at 45 Hz

• 350 Watts RMS x 1 @ 4 ohm
• 700 Watts RMS x 1 @ 2 ohm
• Frequency Response: 10 - 300 Hz
• Wired remote bass level control included
• Variable Bass Boost: 0 to +9 dB bass boost at 45 Hz

MB Quart XA1-1500.1D_XKIT42

1500W Monoblock X-Line Series Class D Amplifier + FREE 100% Copper, 2-Chan. True Spec 4 Gauge Amp Installation Kit

XA1-1500.1D_XKIT42 big DISCONTINUED
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MB Quart XA1-1500.1D_XKIT42

1500W Monoblock X-Line Series Class D Amplifier + FREE 100% Copper, 2-Chan. True Spec 4 Gauge Amp Installation Kit

• RMS: 325W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Elaborate preamplifier with extended control
• Frequency Response: 10 - 300 Hz
• 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

124

• RMS: 325W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Elaborate preamplifier with extended control
• Frequency Response: 10 - 300 Hz
• 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

MB Quart FX1.600 (Factory Refurbished)

600W RMS 1-Channel Monoblock Formula Series Amplifier

FX1.600 big DISCONTINUED
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MB Quart FX1.600 (Factory Refurbished)

600W RMS 1-Channel Monoblock Formula Series Amplifier

Formula Series Monoblock Car Amplifier • 300W at 4 Ohm • 600W at 2 Ohm • PWM MOSFET Power Supply • MB QR-2 Wired REMOTE • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

Formula Series Monoblock Car Amplifier • 300W at 4 Ohm • 600W at 2 Ohm • PWM MOSFET Power Supply • MB QR-2 Wired REMOTE • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

MB Quart RA1500.1 OPEN BOX COMPLETE

1500W Class D 1-Channel Monoblock Reference Series Amplifier

RA1500.1 big DISCONTINUED
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MB Quart RA1500.1 OPEN BOX COMPLETE

1500W Class D 1-Channel Monoblock Reference Series Amplifier

  • Item Condition: Open box complete
    • • Peak: 500W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • Built-In System Diagnostics
    • Variable Bass EQ: 0 to +10 dB at 45 Hz
    • Class D Circuitry
    • Dimensions: 8-5/16"W x 15-3/4"D x 2-3/8"H

  • Item Condition: Open box complete
    • • Peak: 500W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • Built-In System Diagnostics
    • Variable Bass EQ: 0 to +10 dB at 45 Hz
    • Class D Circuitry
    • Dimensions: 8-5/16"W x 15-3/4"D x 2-3/8"H

    MB Quart XA1-1000.1D_XKIT42

    1000W Monoblock X-Line Series Class D Amplifier + FREE 100% Copper, 2-Chan. True Spec 4 Gauge Amp Installation Kit

    XA1-1000.1D_XKIT42 big DISCONTINUED
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    MB Quart XA1-1000.1D_XKIT42

    1000W Monoblock X-Line Series Class D Amplifier + FREE 100% Copper, 2-Chan. True Spec 4 Gauge Amp Installation Kit

    • Peak : 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Fluid-FETS hand selected insulated MOSFETS
    • Q-Stasis preamp stage with wide input range
    • Elaborate preamplifier with extended control
    • Frequency Response: 10 - 300 Hz
    • 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

    124

    • Peak : 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Fluid-FETS hand selected insulated MOSFETS
    • Q-Stasis preamp stage with wide input range
    • Elaborate preamplifier with extended control
    • Frequency Response: 10 - 300 Hz
    • 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

    MB Quart OA500.1 (Factory Refurbished)

    500W Onyx Series Class AB 1-Channel Monoblock Amplifier

    OA500.1 big DISCONTINUED
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    MB Quart OA500.1 (Factory Refurbished)

    500W Onyx Series Class AB 1-Channel Monoblock Amplifier

    • 250 Watts RMS x 1 @ 4 ohm
    • 500 Watts RMS x 1 @ 2 ohm
    • Frequency Response: 10 - 300 Hz
    • Wired remote bass level control included
    • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
    • Dimensions: 9.45" W x 11.81" L x 2.23" H

    • 250 Watts RMS x 1 @ 4 ohm
    • 500 Watts RMS x 1 @ 2 ohm
    • Frequency Response: 10 - 300 Hz
    • Wired remote bass level control included
    • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
    • Dimensions: 9.45" W x 11.81" L x 2.23" H

    MB Quart FX1.400 Open Box

    (Open Box) 400W RMS, 1-Channel Monoblock Formula Series Amplifier

    FX1.400 big DISCONTINUED
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    MB Quart FX1.400 Open Box

    (Open Box) 400W RMS, 1-Channel Monoblock Formula Series Amplifier

    Formula Series Monoblock Car Amplifier • 200W at 4 Ohm • 400W at 2 Ohm • PWM MOSFET Power Supply • MB QR-2 Wired REMOTE • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

    Formula Series Monoblock Car Amplifier • 200W at 4 Ohm • 400W at 2 Ohm • PWM MOSFET Power Supply • MB QR-2 Wired REMOTE • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

    EXCLUSIVE

    MB Quart X-Line Amplifier & Subwoofers Package with Premium Amp Wiring Kit

    XA1-1000.1D 1000W X-Line Series Class D Amplifier + (2) DW1-304 12" Dual 4-Ohm Discus Series Subwoofer + Kicker 100% OFC Amp Kit

    XA1-1000.1D_DW1-304 big DISCONTINUED
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    MB Quart X-Line Amplifier & Subwoofers Package with Premium Amp Wiring Kit

    XA1-1000.1D 1000W X-Line Series Class D Amplifier + (2) DW1-304 12" Dual 4-Ohm Discus Series Subwoofer + Kicker 100% OFC Amp Kit

    • X-Line Series Monoblock Class D Amplifier
    • Frequency Response: 10 - 300 Hz
    • 12" Dual 4-Ohm Discus Series Subwoofers
    • Thermal formed Polypropylene cone and dust cap
    • Complete 4 Gauge OFC CK-Series 2-Channel Amplifier Installation Kit

    • X-Line Series Monoblock Class D Amplifier
    • Frequency Response: 10 - 300 Hz
    • 12" Dual 4-Ohm Discus Series Subwoofers
    • Thermal formed Polypropylene cone and dust cap
    • Complete 4 Gauge OFC CK-Series 2-Channel Amplifier Installation Kit

    MB Quart OA1550.1D OPEN BOX COMPLETE

    1500W Mono Block Onyx Series Class D Amplifier

    OA1550.1D big DISCONTINUED
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    MB Quart OA1550.1D OPEN BOX COMPLETE

    1500W Mono Block Onyx Series Class D Amplifier

    • RMS: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Total Peak Power: 1000W
    • Fluid-Fets MOSFET Power Supply
    • Q-Stasis Pre-Amplifier Stage
    • Heavy Duty Aluminum Alloy Heat-Sink
    • Dimensions: 9.50"W x 14.41"L x 2.34"H

    • RMS: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Total Peak Power: 1000W
    • Fluid-Fets MOSFET Power Supply
    • Q-Stasis Pre-Amplifier Stage
    • Heavy Duty Aluminum Alloy Heat-Sink
    • Dimensions: 9.50"W x 14.41"L x 2.34"H

    MB Quart RA1000.1 OPEN BOX COMPLETE

    1000W Class D 1-Channel Monoblock Reference Series Amplifier

    RA1000.1 big DISCONTINUED
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    MB Quart RA1000.1 OPEN BOX COMPLETE

    1000W Class D 1-Channel Monoblock Reference Series Amplifier

    Item is used and has been installed
    • Peak: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Total Peak Power: 1000W
    • Built-In System Diagnostics
    • Variable Bass EQ: 0 to +10 dB at 45 Hz
    • Class D Circuitry
    • Dimensions: 8-5/16"W x 15-1/2"D x 2-3/8"H

    Item is used and has been installed
    • Peak: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Total Peak Power: 1000W
    • Built-In System Diagnostics
    • Variable Bass EQ: 0 to +10 dB at 45 Hz
    • Class D Circuitry
    • Dimensions: 8-5/16"W x 15-1/2"D x 2-3/8"H

    MB Quart ONX1.2000D (Factory Refurbished)

    2000W ONYX Series Class D Monoblock Amplifier

    ONX1.2000D big DISCONTINUED
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    MB Quart ONX1.2000D (Factory Refurbished)

    2000W ONYX Series Class D Monoblock Amplifier

    • Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
    • Total Peak Power: 2000W
    • Wired Bass Remote Included
    • Bass Boost: 0-10 dB
    • 1 Pair of Preamp Outputs
    • Dimensions: 14-7/8"L x 9"W x 2-1/2"H

    • Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
    • Total Peak Power: 2000W
    • Wired Bass Remote Included
    • Bass Boost: 0-10 dB
    • 1 Pair of Preamp Outputs
    • Dimensions: 14-7/8"L x 9"W x 2-1/2"H

    MB Quart RA2000.1 OPEN BOX COMPLETE

    2000W Class D 1-Channel Monoblock Reference Series Amplifier

    RA2000.1 big DISCONTINUED
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    MB Quart RA2000.1 OPEN BOX COMPLETE

    2000W Class D 1-Channel Monoblock Reference Series Amplifier

    Used and previously installed
    • Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
    • Total Peak Power: 4000W
    • Built-In System Diagnostics
    • Variable Bass EQ: 0 to +10 dB at 45 Hz
    • Class D Circuitry
    • Dimensions: 8-5/16"W x 20-1/2"D x 2-3/8"H

    Used and previously installed
    • Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
    • Total Peak Power: 4000W
    • Built-In System Diagnostics
    • Variable Bass EQ: 0 to +10 dB at 45 Hz
    • Class D Circuitry
    • Dimensions: 8-5/16"W x 20-1/2"D x 2-3/8"H

    MB Quart DSC 1500.1D (DSC1500.1D) Open Box

    (Open Box) 1500W RMS, Discus Series Class D Monoblock Amplifier (DSC1500.1D)

    DSC-1500.1D big DISCONTINUED
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    MB Quart DSC 1500.1D (DSC1500.1D) Open Box

    (Open Box) 1500W RMS, Discus Series Class D Monoblock Amplifier (DSC1500.1D)

    Discus Series Class D Monoblock Car Amplifier • 375W x 1 chan. @ 4 ohm • 750W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • Unbalanced RCA inputs • Damping Factor: >180 • Subsonic Filter (15-35 Hz)

    Discus Series Class D Monoblock Car Amplifier • 375W x 1 chan. @ 4 ohm • 750W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • Unbalanced RCA inputs • Damping Factor: >180 • Subsonic Filter (15-35 Hz)

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      MB Quart Monoblock Amplifiers Information

      The MB Quart monoblock amplifiers are designed for efficient power output. These amps take up little space and feature high-quality platinum finished connections and solid power ratings. You won't be disappointed with your MB Quart monoblock amplifier for your vehicle's needs.
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