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If you're serious about taking your boat's audio to the next level, the MB Quart NA3-1000.5 marine amplifier is your ultimate solution. This 5-channel powerhouse is built for aggressive marine use, delivering bold sound and unmatched durability on open waters.
Whether you're cruising the coast or anchored at the lake, this amplifier ensures your music is loud, clear, and always ready for action.This marine amp offers exceptional sound clarity, thermal protection, and enhanced control, ensuring every boating journey feels like a concert.
Marine electronics must survive conditions no land amplifier ever sees. The NA3-1000.5 is designed with that reality in mind.
Conformal-coated PC board resists corrosion from salt and humidity
Heavy-duty aluminum chassis blocks out UV rays and moisture
Marine-rated connectors ensure long-lasting, weatherproof performance
Every detail ensures this marine amp thrives where others fail.
This is not your average amplifier. The NA3-1000.5 gives you unmatched system control with its 5-channel layout.
4 full-range channels power tower, cabin, or cockpit speakers
1 subwoofer channel adds thunderous bass on the water
Independently adjustable gain and crossover settings for each section
From soft acoustic tracks to bass-heavy beats, this amplifier makes everything sound spectacular.
The NA3-1000.5 delivers massive output without draining your boat's electrical system. Its Class D architecture balances power and efficiency.
100 watts RMS x 4 @ 4 ohms for speakers
500 watts RMS x 1 @ 2 ohms for subwoofer
Clean audio at high volumes, even under load
Your system runs stronger, longer, with less heat and battery demand.
Whether upgrading or starting fresh, this marine amp installs with ease and precision.
RCA and high-level inputs accommodate any marine head unit
Variable high- and low-pass crossovers allow fine-tuning
Nickel-plated terminals resist corrosion and ensure solid connections
Perfect for do-it-yourselfers or professional installers alike.
Don't let the compact size fool you. The NA3-1000.5 is a beast under the deck or behind the console.
Slim profile fits tight storage areas or hidden compartments
Thermal and short circuit protection for safe operation
Lightweight and rugged for easy transport and mounting
Space-saving performance means more room for your boating essentials.
Thinking about growing your marine audio system? This amplifier is ready.
Compatible with additional marine speakers and subwoofers
Pre-amp outputs make daisy-chaining simple
Versatile design works with multi-zone audio systems
It’s the perfect core for custom marine builds.
Pair your audio system upgrade with better boat and vehicle protection. Delaware Window tinting can reduce UV exposure and enhance privacy.
5-channel Class D marine-grade amplifier
100W x 4 RMS @ 4 ohms + 500W x 1 RMS @ 2 ohms
Water-resistant housing and connectors
Fully adjustable crossovers and gain
RCA and high-level input support
Rugged construction for long life in harsh conditions
Browse our complete marine amplifiers collection for more high-performance audio solutions for your boat.
Need installation help or advice? Our experts are here for your marine audio needs.
Audio Jam
📍 227 Governors Place, Bear, DE 19701
📞 (302) 832-2868
🌐 www.audiojamonline.com
Q: Can this marine amplifier power tower speakers and a subwoofer?
A: Yes, it’s built to run both with five separate channels.
Q: Is it safe to install in wet areas?
A: Yes, it has water-resistant features and marine-grade sealing.
Q: Will it work with my factory head unit?
A: Absolutely. The high-level inputs allow seamless connection to factory systems.
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
