MB Quart - NA4-320.4 Nautic 320 Watt Waterproof 4 Channel Amplifier 40x4 @ 4OHM, 80x4@2OHM - Black/Gray
Specifications
- Amplifier ClassDNumber Of Channels4Bass BoostVariable
- Key Specs
- Amplifier Class: D (An amplifier's mode of operation, specifically the conditions in which its electrical current flows for the duration of an audio signal, determines its class. Each class has its strengths and weaknesses when it comes to power efficiency, levels of crossover distortion, and overall sound quality.)
- Number Of Channels: 4
- Bass Boost: Variable (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
- General
- Brand: MB Quart
- Model Number: NA4-320.4
- Product Name: MB Quart NA4-320.4 Nautic 320 Watt Waterproof 4 Channel Amplifier 40x4 @ 4OHM, 80x4@2OHM
- Color: Black/Gray
- Audio Power
- Total Power Handling RMS: 160 watts
- Total Power Handling Maximum: 320 watts
- Amplifier Class: D (An amplifier's mode of operation, specifically the conditions in which its electrical current flows for the duration of an audio signal, determines its class. Each class has its strengths and weaknesses when it comes to power efficiency, levels of crossover distortion, and overall sound quality.)
- Audio
- Number Of Channels: 4
- Bass Boost: Variable (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
- Features
- Bluetooth Enabled: false (The device is capable of communicating with another device via Bluetooth, provided they are within the required range of each other. A Bluetooth-enabled device must also be the same Bluetooth version or higher than the accessory it is intended to pair with.)
- Marine: true
- Dimensions
- Product Height: 17.000 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 15.250 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth: 9.750 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
- Product Weight: 10.0 pounds (The out of box weight of the item.)
- Warranty
- Warranty - Parts: 1-Year Manufacturer Warranty
- Warranty - Labor: None
- Other
- UPC: 806576238201
The MB Quart NA4-320.4 Nautic amplifier is engineered to deliver reliable, high-efficiency performance in demanding marine and powersports environments. Designed with a compact footprint and rugged construction, this 4-channel Class D amplifier produces 160 watts of RMS output, making it ideal for powering full-range speaker systems in outdoor vehicles. Built to meet IP67 standards, the NA4-320.4 is fully waterproof and dustproof, ensuring dependable operation in wet and harsh conditions. Its potted internal circuitry provides an added layer of protection by sealing sensitive components against moisture, vibration, and corrosion. This design significantly enhances long-term durability and system reliability where traditional amplifiers would fail. Performance is equally prioritized with MB Quart’s Q-Stasis low-noise preamp circuit, which minimizes unwanted signal interference and improves overall audio clarity. The amplifier also features a highly efficient PWM MOSFET power supply with Simpatico coil design, maintaining stable voltage while reducing heat buildup. A fixed 80Hz high-pass crossover allows for proper speaker protection and system tuning, while the wide 0.2V–9V input sensitivity ensures compatibility with a variety of source units. Installation is streamlined thanks to quick-connect power, speaker, and RCA terminals, along with nickel-plated, corrosion-resistant connections that maintain signal integrity over time. Integrated protection circuitry monitors thermal, overload, DC, and short conditions, providing peace of mind during extended use. Specifications: Type: 4-Channel Class D Amplifier Max Power: 320 Watts Power @ 2 Ohms: 4 x 80W Power @ 4 Ohms: 4 x 40W Frequency Response: 13Hz – 29kHz Signal-to-Noise Ratio: >95dB Total Harmonic Distortion: 1.0% Input Sensitivity: 0.2V – 9V Crossover: Fixed High-Pass 80Hz Inputs: 2 Pair RCA Power Connection: 12 AWG Quick Connector Speaker Connection: Molex Plug Connector Fusing: 30A x 1 IP Rating: IP67
- Key Feature: 320W max 4-channel Class D amplifier (4×80W @ 2Ω, 4×40W @ 4Ω)
- Key Feature: IP67-rated waterproof and dustproof design with fully potted internals for marine and powersports durability
- Key Feature: Q-Stasis low-noise preamp circuit improves signal clarity and reduces source interference
- Key Feature: Compact chassis with quick-connect power, speaker, and RCA connections for fast installation
- Key Feature: Fixed 80Hz high-pass crossover with electronic control for system tuning flexibility
- Key Feature: 320W max 4-channel Class D amplifier (4×80W @ 2Ω, 4×40W @ 4Ω)
- Key Feature: IP67-rated waterproof and dustproof design with fully potted internals for marine and powersports durability
- Key Feature: Q-Stasis low-noise preamp circuit improves signal clarity and reduces source interference
- Key Feature: Compact chassis with quick-connect power, speaker, and RCA connections for fast installation
- Key Feature: Fixed 80Hz high-pass crossover with electronic control for system tuning flexibility
- Key Feature: 320W max 4-channel Class D amplifier (4×80W @ 2Ω, 4×40W @ 4Ω)
- Key Feature: IP67-rated waterproof and dustproof design with fully potted internals for marine and powersports durability
- Key Feature: Q-Stasis low-noise preamp circuit improves signal clarity and reduces source interference
- Key Feature: Compact chassis with quick-connect power, speaker, and RCA connections for fast installation
- Key Feature: Fixed 80Hz high-pass crossover with electronic control for system tuning flexibility
Whats Included
- MB Quart NA4-320.4 Nautic 320 Watt Waterproof 4 Channel Amplifier 40x4 @ 4OHM, 80x4@2OHM
- MB Quart NA4-320.4 Nautic 320 Watt Waterproof 4 Channel Amplifier 40x4 @ 4OHM, 80x4@2OHM
- MB Quart NA4-320.4 Nautic 320 Watt Waterproof 4 Channel Amplifier 40x4 @ 4OHM, 80x4@2OHM
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The MB Quart NA4-320.4 Nautic amplifier is engineered to deliver reliable, high-efficiency performance in demanding marine and powersports environments. Designed with a compact footprint and rugged construction, this 4-channel Class D amplifier produces 160 watts of RMS output, making it ideal for powering full-range speaker systems in outdoor vehicles. Built to meet IP67 standards, the NA4-320.4 is fully waterproof and dustproof, ensuring dependable operation in wet and harsh conditions. Its potted internal circuitry provides an added layer of protection by sealing sensitive components against moisture, vibration, and corrosion. This design significantly enhances long-term durability and system reliability where traditional amplifiers would fail. Performance is equally prioritized with MB Quart’s Q-Stasis low-noise preamp circuit, which minimizes unwanted signal interference and improves overall audio clarity. The amplifier also features a highly efficient PWM MOSFET power supply with Simpatico coil design, maintaining stable voltage while reducing heat buildup. A fixed 80Hz high-pass crossover allows for proper speaker protection and system tuning, while the wide 0.2V–9V input sensitivity ensures compatibility with a variety of source units. Installation is streamlined thanks to quick-connect power, speaker, and RCA terminals, along with nickel-plated, corrosion-resistant connections that maintain signal integrity over time. Integrated protection circuitry monitors thermal, overload, DC, and short conditions, providing peace of mind during extended use. Specifications: Type: 4-Channel Class D Amplifier Max Power: 320 Watts Power @ 2 Ohms: 4 x 80W Power @ 4 Ohms: 4 x 40W Frequency Response: 13Hz – 29kHz Signal-to-Noise Ratio: >95dB Total Harmonic Distortion: 1.0% Input Sensitivity: 0.2V – 9V Crossover: Fixed High-Pass 80Hz Inputs: 2 Pair RCA Power Connection: 12 AWG Quick Connector Speaker Connection: Molex Plug Connector Fusing: 30A x 1 IP Rating: IP67
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