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When your boat hits open water, only the best marine amplifier will do. The MB Quart NA3-560.4 isn’t just another amp—it’s a game-changer for marine sound systems. Built for the elements and packed with power, it lets you enjoy your music the way it was meant to be heard.
This marine amp also offers low heat generation, enhancing efficiency even under extended use. Its compact footprint makes it perfect for tight installations on boats or ATVs. With MB Quart’s precision tuning capabilities, you get unmatched audio balance and clarity. It’s a smart investment for any marine audio enthusiast seeking power, protection, and pristine sound in one package.
The NA3-560.4 offers outstanding audio performance in a compact, weather-resistant package. It's made specifically for boats and off-road vehicles. That means no more sacrificing volume or clarity just because you’re away from land.
Water, salt, or sand—it handles it all with ease.
Whether you’re hosting a dock party or cruising solo, this amplifier gives your sound system a serious boost.
You need gear that won’t fail on the water. This marine amplifier features conformal-coated circuitry that resists moisture, corrosion, and UV rays. Its aluminum heat sink prevents overheating without the need for a bulky fan.
It’s marine-rated from the ground up.
Fully sealed construction protects internal components
Corrosion-resistant terminals extend the amplifier's lifespan
Vibration-tested for high-performance on rough waters
The MB Quart NA3-560.4 delivers 560 watts of clean power across four channels. Whether you’re powering tower speakers or multiple zones, this amp brings your music to life.
No distortion, no dropouts—just pure sound.
4 x 140 watts at 2 ohms
Bridgeable design for flexible configurations
Class D efficiency keeps performance high and heat low
The built-in signal processing ensures your sound is dialed in perfectly. It includes high- and low-pass filters, gain control, and preamp outputs.
Customize your setup with precision.
Variable crossover filters
RCA pass-through for system expansion
Low-noise circuitry eliminates interference
Installing the NA3-560.4 is a breeze. It works seamlessly with most head units and OEM systems. Its compact chassis fits into tight spaces often found on boats.
Compact size: fits glove boxes and behind panels
Quick-connect terminals make wiring easier
Compatible with Bluetooth receivers and multi-zone controllers
Not only is the amp tough, but it looks great too. Its sleek black and silver design complements any marine setup. It’s an audio upgrade that feels premium from every angle.
Want to expand your marine sound system further? The NA3-560.4 pairs perfectly with any marine amplifier or powered subwoofer. Add multiple zones or dedicated bass channels effortlessly.
Upgrade more than just your sound. Pair this setup with car window tinting for glare protection and privacy. Better visibility on the water enhances safety and overall comfort.
Located in Delaware? Visit Audio Jam for professional installation, upgrades, or product guidance. Our marine audio experts are ready to help.
📍 Address: 227 Governors Place, Bear, DE
📞 Call: (302) 832-2868
🌐 Website: audiojamonline.com
Q: Can I install this marine amplifier myself?
A: Yes, it’s designed for easy DIY installs, but professional installation ensures optimal results.
Q: Is this amplifier compatible with factory marine stereos?
A: Absolutely. It integrates smoothly with both factory and aftermarket systems.
Q: How do I protect this amplifier from water?
A: Its sealed, marine-grade design is built to resist moisture and corrosion.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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I did receive my package in only a few days which was great. I have opened it and it is the complete kit. Hopefully when I have it installed it works as expected. If so it will have been a great shopping experience with, Audio Jam.
Shipping to took to long a week late
It didn’t work and no instructions included
I did receive my package in only a few days which was great. I have opened it and it is the complete kit. Hopefully when I have it installed it works as expected. If so it will have been a great shopping experience with, Audio Jam.
Good product
