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Deal.ai › MB Quart › Boat & Car Amplifiers
MB Quart
MB Quart MA1-440.4 440 Watt Car Audio Amplifier

MB Quart MA1-440.4 440 Watt Car Audio Amplifier

5(5 ratings)

Best price now

$109.29at SearsChecked 12 min ago

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $109.29 at Sears (checked Nov 11, 2026).
  • Checked at 6 stores.

Our take on the MB Quart MA1-440.4 440 Watt Car Audio Amplifier

The MB Quart MA1-440.4 is a four-channel car amplifier rated at 440 watts total RMS. It is a compact Class AB design aimed at powering a full set of door speakers or a pair of components plus rear coaxials. It has no marine rating, so it belongs in a car, not a boat. Against pricier four-channel amps it gives up some power and tuning depth, but it covers the basics for a simple system.

Best forBudget four-speaker car systemsPowering front components and rear coaxialsFirst-time amp installsSmall cars and tight mounting spaces
Pros
  • Four channels cover front and rear speakers from one amp
  • 440 watts RMS total is enough for typical coaxial and component sets
  • Compact chassis fits under seats and in small trunks
  • Simple controls keep setup straightforward
  • Class AB design is common and well understood by installers
Cons
  • Not marine rated, so it is unsuitable for boats
  • Modest power for power-hungry subwoofers or high-end components
  • Fewer tuning features than premium four-channel amps
  • Class AB runs warmer and draws more current than Class D designs

MB Quart MA1-440.4 440 Watt Car Audio Amplifier prices at every store

  • SearsNew

    In stockSold by Mac Marvel's

    $109.29Free shippingChecked 12 min ago
    Visit Sears
  • Online Car StereoNew

    Availability unknown

    $190.99Checked 12 min ago
    Visit Online Car Stereo
  • WalmartNew

    Out of stockSold by Spreetail

    $79.99Free shippingChecked 11 min ago
    Visit Walmart
  • Best BuyNew

    Out of stock

    $79.99Free shippingChecked 11 min ago
    Visit Best Buy
  • TargetNew

    Out of stock

    $79.99Free shippingChecked 12 min ago
    Visit Target
  • vminnovations.comNew

    Out of stock

    $79.99Checked 12 min ago
    Visit vminnovations.com

Store links may earn us a commission. Some prices via Klarna.

MB Quart MA1-440.4 440 Watt Car Audio Amplifier price history

$79.99$79.99
Nov 9Nov 11

Lowest price we've seen: $79.99 on Nov 9 at Best Buy. Tracked across 6 stores since Nov 9.

About the MB Quart MA1-440.4 440 Watt Car Audio Amplifier

MB QUART MA1-440.4 440 Watt 4-Channel Car Audio Amplifier Amp Black. Key specifications and features include Low Noise Preamplifier Circuit: Q-Stasis Pre Amplifier Stage: Maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion; RCA Inputs: Nickel Plated: High temperature impact resistant nickel-plated RCA inputs that allow for secure connections and is erosion resistant; Operation Mode: 4 channel operation mode allows either stereo or mono bridged operation; Crossover Type: Variable electronic crossovers allow for complete control of the sound; Electronic Equalizer: Control of amplifier output with on-board electronic crossover to tailor specific frequencies to speakers and subwoofers. Additional product details include Class / Topology: Class Q1 (Class D): MB Quart's Class Q1 offers the efficiency of today's D-Class with increased engineering to focus on sound quality from the power supply through the output devices, the FLUID-FETS; Output Device Technology: FLUID-FETS: MB Quart output devices, FLUID-FETS are painstakingly selected for their ability to efficiently produce power and mimic the sound quality of the highest end home amplifiers; Heat Sink: Heavy duty heat-sink efficiently moves heat from the MOSFET where it can be cooled; Power Supply: Rugged MOSFET Pulse Width Modulation power supply: Allows amplifier to product efficient power without taxing the vehicle electrical system; Output Connections: Heavy duty connections allow for secure electrical signal to pass into wiring and resist erosion which will add longevity to the amplifier.

Specifications

Type
MultichannelSource
Suitable for Boats
NoSource
No. of Channels
4Source
Power Output
RMSSource
color
BlackSource

Questions and answers

How much power does the MA1-440.4 put out per channel?
It is rated at 440 watts RMS total across four channels, so roughly 110 watts per channel. Check the per-channel rating at your speaker impedance before matching speakers.
Can I use it to power a subwoofer?
You can bridge channels to drive a subwoofer, but the total output is modest. A dedicated mono sub amp will give more control and headroom.
Is it safe to install in a boat?
No. MB Quart does not rate this amp for marine use, so moisture and salt exposure can damage it. Choose a marine-rated amp for boat audio.
Does it need a separate line output converter?
Only if your head unit lacks RCA preouts. With preouts you can connect it directly; otherwise add a line output converter.
What speakers pair well with it?
Coaxial or component sets rated around 50 to 100 watts RMS per channel are a sensible match. Very low-impedance or high-power speakers will push it hard.
Where is the MB Quart MA1-440.4 440 Watt Car Audio Amplifier cheapest?
At Sears, for $109.29, as of our latest check.
What do buyers say about the MB Quart MA1-440.4 440 Watt Car Audio Amplifier?
Rated 5 out of 5 from 5 ratings.
Where can I buy the MB Quart MA1-440.4 440 Watt Car Audio Amplifier?
6 stores we checked sell it, including Walmart, Best Buy, Target, vminnovations.com, Sears.

Stores we've priced the MB Quart MA1-440.4 440 Watt Car Audio Amplifier at

  • Best Buy deals and prices
  • Sears deals and prices
  • Target deals and prices
  • vminnovations.com deals and prices
  • Walmart deals and prices

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