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The MB Quart NA2-400.1 is not your average marine amplifier—this compact powerhouse delivers clean, reliable sound on any open-water adventure. Whether you're navigating choppy seas or docked in calm bays, this amplifier ensures your marine audio experience stays loud, crisp, and free from distortion.
Designed with rugged conditions in mind, the NA2-400.1 combines cutting-edge performance with weather-resistant durability. It's the perfect upgrade for boaters who want powerful, uninterrupted audio without compromising space or efficiency.
This marine amp is built tough for harsh marine environments.
Conformal-coated circuit boards resist salt, moisture, and vibration
Compact chassis fits in tight installation spaces
High-density heat sink reduces overheating risk
Its small footprint makes it ideal for boats with limited mounting room, without sacrificing sound power.
The MB Quart NA2-400.1 may be small, but it delivers substantial output.
RMS Power: 400 watts at 2 ohms
Efficient Class D technology conserves battery life
Low Total Harmonic Distortion (THD) for clean audio
Whether you’re powering a single subwoofer or a bass-heavy setup, this marine amplifier keeps your system energized with minimal draw.
Boats demand gear that can stand up to water, UV rays, and corrosion—and the NA2-400.1 delivers.
IPX-rated casing withstands water spray and humidity
All terminals are nickel-plated for marine longevity
Water-resistant control panel protects tuning settings
This amplifier thrives in marine conditions and keeps your audio strong, even when the weather turns.
Dial in your ideal sound with simple and responsive controls.
Built-in low-pass filter (LPF) helps shape subwoofer output
Adjustable bass boost fine-tunes the punch
RCA and high-level inputs support versatile installations
You’ll achieve optimal bass response no matter the size or layout of your vessel.
The NA2-400.1 is compatible with various marine audio setups. It integrates smoothly into both new and existing systems.
Works with marine head units and Bluetooth controllers
Pair it with MB Quart marine speakers or subs for balanced sound
Compatible with multi-amp systems through pass-through preamp outputs
It’s a breeze to install and configure, even on complex marine rigs.
Advanced protection circuits shield your system from harm.
Thermal overload and short-circuit protection
DC offset and speaker load monitoring
Auto shut-off to prevent amplifier damage
Even under intense use, this marine amp stays safe and operational.
Installers love the MB Quart NA2-400.1 for its intuitive wiring layout.
Screw terminals ensure secure power and ground connections
Color-coded wiring simplifies the setup process
Compact dimensions allow flexible placement options
Whether you’re a pro or a DIYer, you’ll appreciate the easy configuration.
400 watts RMS power
Compact, marine-grade aluminum chassis
Conformal-coated internals
IPX water resistance
Low-pass filter and bass boost
Short and thermal protection
Class D high-efficiency design
Looking for a reliable marine amp? Explore more marine amplifiers collection that match your setup.
While you enhance your boat’s sound, why not boost its look? Check out Delaware window tinting services to reduce glare and improve your ride’s style and comfort.
Need help choosing the perfect marine amplifier? We’re here for you.
Audio Jam
227 Governors Place, Bear, DE 19701
📞 (302) 832-2868
🌐 www.audiojamonline.com
Q: Can the NA2-400.1 power multiple subwoofers?
A: It's optimized for one subwoofer, but can power multiple if impedance matches its rating.
Q: Is this marine amplifier hard to install?
A: Not at all! It’s designed with easy terminals and clear labeling for straightforward setup.
Q: Will it overheat on long trips?
A: No. The Class D circuitry and heat sink design minimize thermal stress and keep it cool.
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
