MB Quart Discus 5 Channel Marine Amplifier with Top Mounted Controls, 500 Watts - 431771

MB Quart Discus 5 Channel Marine Amplifier with Top Mounted Controls, 500 Watts - 431771

Take your marine audio system to the next level with the MB Quart Discus 5 Channel Marine Amplifier, engineered for powerful performance and rugged durability in harsh environments. Delivering up to 425 watts of clean, efficient power at 2 ohms of amp power and 290 watts at 4 ohms of amp power, this amplifier is built to handle life on the water while providing exceptional sound clarity and control. Its potted internal components add an extra layer of protection against moisture, vibration, and corrosion, making it ideal for boats, UTVs, and other outdoor applications.

At the heart of the system is a highly efficient Class D topology, allowing the amplifier to generate significant power while maintaining a compact design and minimizing strain on your electrical system. The premium MOSFET Pulse Width Modulation power supply ensures consistent output, while MB Quart’s FLUID-FET output devices deliver clean, high-quality sound that rivals high-end home audio systems.

The Q-Stasis preamplifier stage maximizes low-voltage input signals with minimal distortion, preserving audio detail and clarity. Variable electronic crossovers and onboard sound contouring features, including bass boost and adjustable input sensitivity, allow you to fine-tune your system for optimal performance.

Built for convenience and reliability, the amplifier features waterproof connectors and prewired RCA inputs for secure, corrosion-resistant connections. Top-mounted controls are sealed for protection yet easily accessible for quick adjustments. LED system diagnostics provide real-time feedback for overload and short protection, ensuring your system stays safe and performing at its best.

Features

• MB Quart Discus 4 channel amp delivers 4 x 50 +1 x 225W @ 2 ohm, 4 x 35 + 1 x150W @ 4 ohm, or 2 x 100W bridged @ 4 ohm—ideal marine amp, motorcycle amp, and UTV audio system upgrade
• Fully sealed, waterproof, and dustproof design built for boats, ATVs, UTVs, motorcycles, and outdoor audio systems in harsh environments
• Small footprint amplifier is perfect for tight installs where space is limited
• Advanced Class D technology produces powerful, clean sound while reducing heat and electrical load for tight installs and powersports applications
• Variable high/low pass crossover (15Hz–300Hz), adjustable input sensitivity (0.2V–9V), waterproof connections, and LED protection indicators for reliable performance
• Color: Black
• Dimensions (L x W x H): 23.25 x 6.0 x 4.0 inches
• Weight: 6.1 pounds
  

What our Experts Think

• 5-channel versatility – Powers your full marine audio system, including speakers and a subwoofer, from one compact amplifier.
• 500 watts of clean output – Delivers balanced, reliable performance for clear sound on the water.
• Top-mounted controls – Makes gain and crossover adjustments quick and convenient after installation.
• Marine-ready design – Built to withstand harsh boating environments while maintaining dependable performance.
• Great all-in-one upgrade – An excellent choice for cleaner sound, simplified wiring, and efficient system expansion.

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