320W RMS Class D Nautic Series 4-Channel Marine and Powersports Amplifier
Product highlights
• 40 watts x 4 channel @ 4 ohm
• 80 watts x 4 channel @ 2 ohm
• Total RMS Power: 320 watts
• Class D 2 ohm Stable 4-Channel Amplifier
The MB Quart NA4-320.4 is a high-performance, 320W 4-channel amplifier specifically engineered for the extreme environments of marine and powersports vehicles. This "Nautic" series powerhouse utilizes a highly efficient Full Range Class D topology, allowing it to deliver impressive output from an ultra-compact chassis that fits easily in tight mounting locations. Built with IPX5-rated water resistance and ASTM-certified conformal-coated circuitry, the NA4-320.4 is designed to withstand moisture, salt spray, and UV exposure without compromising sound quality. Whether powering four full-range speakers, this amplifier provides the clean, stable power needed to cut through engine noise and wind.
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Manufacturer:
Model Number:
NA4-320.4
Weight:
2.20lbs
Internal SKU:
na43204
Internal Product ID:
230165
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
