Car Sounds Electronics

MB Quart NA3-560.4 4-Channel Marine Amplifier - 70W x 4

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Product Description

MB Quart NA3-560.4 Marine Amplifier 4 Channel, 70W x 4

Power your marine audio system with the MB Quart NA3-560.4 4-channel amplifier. Built for durability and performance, this amplifier delivers clean, reliable power while withstanding harsh marine conditions.

Key Features

  • 4-Channel Marine Amplifier Ideal for full system setups
  • 70 Watts x 4 @ 4 Ohms Clear and consistent power output
  • 140 Watts x 4 @ 2 Ohms Increased performance at lower impedance
  • 280 Watts x 2 Bridged @ 4 Ohms Flexible configuration options
  • Class AB Design Balanced sound quality and efficiency
  • Weather-Resistant Construction Built for marine environments
  • Conformal-Coated Circuit Board Protection against moisture and corrosion

Versatile Performance

The NA3-560.4 is designed as two full-range 2-channel amplifiers in one chassis. Each channel pair can be bridged independently, allowing flexible setups including 4-channel, 3-channel, or 2-channel configurations.

This versatility makes it perfect for powering speakers, subwoofers, or a combination of both in your marine audio system.

Advanced Sound Controls

Fine-tune your sound with built-in adjustable controls:

  • Variable High-Pass & Low-Pass Filters (50250 Hz)
  • 12 dB/Octave Crossover Slope
  • Bass Boost (09 dB at 45 Hz)
  • Adjustable Gain (200mV9V)

Independent controls for channels 1/2 and 3/4 allow precise tuning for different speakers.

Smart Input & Turn-On Options

  • 2-Channel or 4-Channel Input Mode
  • Preamp & Speaker-Level Inputs
  • Selectable Turn-On Modes:
    • Remote turn-on via +12V
    • DC signal sensing for automatic operation

Durable Marine Design

This amplifier is built to handle tough marine environments. The conformal-coated board and weather-resistant construction help protect internal components from moisture, salt, and vibration.

A protective control panel cover helps prevent water intrusion and accidental adjustments.

Connections & Installation

  • 10-Gauge Power & Ground Recommended
  • 35-Amp Fuse Required
  • Plug-and-Play Harness Connections
  • Bolt-in Installation Hardware Included

Compact size allows for flexible mounting in tight spaces.

Technical Specifications

  • Model: NA3-560.4
  • RMS Power Output: 70W x 4 @ 4
  • Power Output @ 2: 140W x 4
  • Bridged Power: 280W x 2 @ 4
  • Minimum Impedance: 2 (stereo), 4 (bridged)
  • THD: 0.2%
  • Signal-to-Noise Ratio: 90 dB
  • Crossover Range: 50250 Hz
  • Bass Boost: 09 dB @ 45 Hz
  • Fuse Rating: 35A
  • Dimensions: 10" W x 1.5" H x 4" D

Whats Included

  • 4-Channel amplifier
  • Power harness
  • Speaker output harness
  • Mounting screws
  • 2.5mm Allen wrench
  • Installation guide and accessories

Why Choose the NA3-560.4?

The MB Quart NA3-560.4 is a reliable marine amplifier built for performance and durability. Its flexible configuration, advanced tuning controls, and weather-resistant design make it a great choice for upgrading any marine audio system.

Deliver powerful, clean sound on the water with this high-quality 4-channel amplifier.