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🌊⚡ Power Your Adventures with Marine-Grade Audio Mastery!
The MB Quart Nautic 1 Channel Class D Amplifier delivers up to 400 watts of max power with marine-grade durability, advanced cooling, and precision audio controls. Designed specifically for marine environments, it features waterproof connectors, low-noise circuitry, and easy installation, making it the perfect high-performance amplifier for boat and powersports audio setups.




| ASIN | B06VT7XSYC |
| Best Sellers Rank | #103,391 in Electronics ( See Top 100 in Electronics ) #234 in Car Mono Amplifiers |
| Customer Reviews | 4.5 4.5 out of 5 stars (114) |
| Date First Available | February 10, 2017 |
| Item Weight | 2.09 pounds |
| Item model number | NA2-400.1 |
| Manufacturer | Mbquart |
N**.
great little sub amp
Does a great job of powering a little 8" sub. Probably work for 10-12" also. Small so it fit on a little box and it has built in crossover and external sub gain.
K**L
Awesome little Amp
I used this to power my 10" R2D4 Rockford fosgate sub in my Polaris Rzr 1000 (under-dash enclosure). So far, no issues. It has not let me down after the initial 100ish miles on the trails. The bass boost knob is also nice to have.
T**.
Perfect for SXS
Delivered as expected, 10 inch kicker comp r sounds great hooked up to this Amp!
C**Y
Very easy.
Replacement for exact same amp hopefully this one works better. Very easy plug and play setup.
C**G
Just wow
13 Electra glide This little mofo kills it . I’ve head unit 5.25 kickers in fairing and 6x9 kickers in the bag lids. I was blown away how load this little amp is louder than my muddies same set up with Rockville amp
C**T
Hide It In Your Jeep Dash!
I installed this inside the dash of my Jeep Wrangler JK. It hides perfectly behind/under the glovebox. I have an aftermarket stereo (Alpine iLX-W650), and I upgraded the 1-ohm dual voice coil (DVC) subwoofer that comes with the factory Alpine “premium” sound system to a 2-ohm DVC shallow-mount sub (Pioneer TS-SW2002D2) that has much better clarity and response. This amp adds some much needed power back into the sub since I cut it in half by doubling the ohms of the voice coils. FYI: The power cable pigtail is only 14 gauge wire. Because it’s installed location was so close to the battery, I only ran 12-gauge wire to the battery. Just cut the in-line fuse off of the pigtail and splice in about 2.5’ of 12-gauge with the fuse going back on nearest the battery. Works perfectly without buying a dedicated “amp wiring kit” and having giant 4-gauge wire unnecessarily. Then I ran new, dedicated speaker wire back to the sub and ran the voice coils in series (so at 4-ohms). 200 watts @ 4-ohms in plenty to push the 8” sub. I only run it at about 60% gain for the balance that I prefer.
S**Y
Works well
Wasn't as loud as I would've liked
J**N
Great price, small package, big sound
I installed this in my sxs hooked to a boss audio stereo. Amp is small and easy to install in small spaces. Fine tuning will take time but very happy with price and product.
Trustpilot
3 days ago
2 weeks ago