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MTX MA400.4

400W RMS Class D MA Series 4-Channel Marine Amplifier

MTX
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• 50 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 Amplifier

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Description


MTX brand icon

Authorized dealer

Compact 400-Watt Marine Performance

The MTX MA400.4 is a high-performance, 4-channel marine amplifier designed to deliver crisp, full-range audio to your boat's speaker system. Engineered to withstand the relentless challenges of life on the water, this Class D powerhouse features a conformal-coated circuit board and stainless steel hardware to protect against salt, moisture, and corrosion. Despite its small footprint, the MA400.4 provides the legendary MTX "Serious About Sound" experience, making it an ideal choice for boaters who need reliable, high-fidelity power without taking up valuable storage space.

It is equipped with professional-grade features, including Tiffany-style RCA inputs for a secure signal and a built-in clip detection light to ensure your system is tuned for maximum output without distortion. With its high-efficiency design and thermal, short-circuit, and voltage protection, the MA400.4 ensures your "Sound Experience" remains uninterrupted through every cruise.

Product Details:

  • MA Series Class D 2 ohm Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohm: 50 watts x 4 channel
    • 2 ohm: 100 watts x 4 channel
    • Bridged: 200 watts x 2 channel @ 4 ohm
  • Total power output: 400 watts
  • CEA2006D compliant amplifier
  • Dyno power rating certified
  • LED power and protect status indicator
  • Clip detection light for tuning optimization
  • Speaker-level (high-level) inputs (Requires adapter like the Kicker KISL)
  • 3-way protection circuitry (thermal, under/overload, and speaker short protection)
  • Conformal coated circuit board for water and salt resistance
  • Stainless steel hardware to prevent corrosion
  • High-quality tiffany-style RCA input
  • High-efficient class D circuit design
  • 10V high-level audio input compatibility
  • Surface mount component technology
  • Direct insert power and speaker terminals
  • Input sensitivity: 0.2 - 10 volts
  • Frequency Response: 20 - 20000 Hz
  • Total Harmonic Distortion (THD): 0.1%
  • Signal to Noise Ratio: 98 dB
  • Variable high-pass filter: 40 - 400 Hz
  • Variable low-pass filter: 40 - 400 Hz
  • Fuse Rating: 40A - 60A
  • 8 AWG or 4 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 8.17" L x 6.8" W x 2.0" H
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
  • MFR #: MA400.4

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Specifications & Details


Key Features
Amplifier Key Features
Weather-Resistant
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
50 watts x 4 channel
RMS Power @ 2 ohms
100 watts x 4 channel
Bridged RMS Power
200 watts x 2 channel
Amplifier Specifications
Series
MA Series
Amplifier Class
D
Number of Channels
4-Channel
Total RMS Power Output
400 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
Frequency Response
20 - 20000 Hz
THD at Rated RMS Power
0.1%
Speaker Level Inputs
Optional (Requires Accessory Adapter)
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
40 - 400 Hz
Low-Pass Crossover Frequency
40 - 400 Hz
Signal-to-Noise Ratio
98 dB
Remote bass/level controller
No
Total Fuse Rating
40
Strappable
No
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
Low-Level Input Sensitivity
0.2 - 10 volts
High-Level Input Sensitivity
0.2 - 10 volts
What is in the box?
Paperwork
User manual
WITB: Amplifiers
Amplifier
Mounting screws (4)
Allen wrenches (2)
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

MTX

Model Number:

MA400.4

Weight:

4.88lbs

Internal SKU:

ma4004

Internal Product ID:

230735

Customer Ratings & Reviews


MTX MA400.4 thumbnail image

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• Class D 1 ohm Stable Monoblock Amplifier

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• Class D 1 ohm Stable Monoblock Amplifier

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