DS18 NXL-N4 HYDRO Full Range Digital Marine 4-Channel Amplifier 720W

$279.95 $609.94 -55% OFF

DS18 NXL-N4 HYDRO Full Range Digital Marine 4-Channel Amplifier 720W

$279.95 $609.94 -55% OFF
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DS18 NXL-N4 HYDRO Full Range Digital Marine 4-Channel Amplifier 720W

  • Marine Full Range 
  • 4 Channel
  • 4 X 100 Watts @ 4 Ohm
  • Class D
  • Micro 
  • Water Resistant

Unmatched Marine-Grade Durability: When you're out on the water, you need gear that can withstand the elements, and the DS18 HYDRO amplifier is built to do just that. Its marine-grade construction ensures resistance to moisture, corrosion, and UV rays, so you can count on it to perform flawlessly even in the most challenging conditions.

Powerful Sound Reinforcement: With a robust 400 watts of power spread across four channels, this amplifier delivers an immersive audio experience that will elevate your marine audio setup to new heights. Whether you're enjoying your favorite tunes or making an announcement over the PA system, the DS18 HYDRO amplifier ensures crystal-clear sound and room-filling volume.

Digital Precision: The full-range digital design of this amplifier guarantees accuracy and efficiency in amplifying your audio signals. It optimizes power usage while minimizing distortion, ensuring your music stays crisp and clear, no matter how high you crank up the volume.

Versatile Connectivity: The DS18 HYDRO amplifier boasts a range of connectivity options, making it compatible with various audio sources. Whether you're connecting it to your marine radio, smartphone, or other devices, you can do so with ease, thanks to its user-friendly interface.

Peace of Mind: DS18 is known for its commitment to quality and reliability. Backed by a manufacturer's warranty, you can enjoy your marine audio system without worrying about unexpected issues.

Elevate your marine audio experience to new heights with the DS18 HYDRO Full Range Digital Marine 4-Channel Amplifier. It's not just an amplifier; it's your gateway to exceptional sound quality, durability, and performance on the water. Don't settle for less when you can have the best – choose DS18 HYDRO today and make every moment on your boat an unforgettable audio adventure.

Standard Features

Amplifier Class: Digital
Amplifier Type: Stereo Full Range
Number of Channels: 4
Minimum Impedance: 2ohm (Stereo) / 4ohm (Bridge)
LED Indicator: Power / Protection
Power Input Size: Wired 10Ga OFC
Fuse Size: 25A
Thermal Protection: Yes

Over-Load Protection: Yes
DC Output Protection: Yes
Short Circuit Output Protection: Yes
Voltage Input Protection: Yes (>15V)
Body Color: Aluminum Black and Red
Waterproof Rating: IPX67
Latest Full Range Digital Design Based on IR Platform: Yes
Ultra Compact Design for Easy Installation: Yes
PCB Design with Stable and Reliable 4-Layer Layout: Yes
Quality Control Verification Using AP Instruments: Yes


Total Watts (Peak): 1800W
RMS Power @ 4 ohm: 4x100W
RMS Power @ 2 ohm: 4x150W
RMS Power @ 4 ohm Bridge: 2x300W


Frequency Response: 20Hz-20KHz
Signal to Noise Ratio 1W @ 4Ω: 90dB
Total Harmonic Distortion (THD): 0.1%
Low Level Input Range: 200mV-5V
Selectable X-Over: HPF/LPF/FULL
X-Over Filter Range: 40-500Hz
Bass Boost Range: No
Infrasonic Filter: No


Overall Length: 7.87" / 200mm
Overall Wide: 3.67" / 93.4mm
Overall Height: 1.56" / 39.8mm
Heatsink Length: 7.16" / 182mm
Gross Single Unit Weight: 2.8Lb / 1.3Kg
Product Weight: 3 lbs
Product Dimensions: 10.25 x 5 x 3
M/C Weight: 28 lbs
M/C Dimensions: 16 x 11 x 10.75
M/C QTY: 10
Sold In: Piece

Shipping Information

Orders typically get shipped out within 1-2 business days and get delivered within 3-5 business days after they're shipped.

You will receive an order confirmation email and a tracking number once your order has shipped.

If for some reason you order an item that is out of stock, our support team will reach out to either give you more information on when your item will arrive or give you a full refund.

Please check out our shipping policy for more information.


DS18 provides consumers with a 2-year limited warranty on any item purchased directly from DS18's official site or any approved DS18 shop for the original purchaser. We ensure the greatest experience possible when purchasing our items, and if there is an issue, we do our best to get it handled immediately.
Warranties are non-transferrable: if you sell or buy to/from a third-party wholesaler your warranty will be null and void.
For more information, please read the parts below that are relevant to your individual product.

What is covered in my warranty?

DS18's 2 Year Limited Warranty protects against flaws in the initial production of their purchased good(s). Any faults or defects in materials or workmanship that present themselves during the warranty period will be corrected right away.

Faults developed under the following circumstances are not covered by DS18’s warranty:

  • Damage resulting from falls, foreign item damage, etc.
  • Damage brought on by carelessness or abuse (including injury to returned goods from inadequate or bad packing).
  • Damage brought on by incorrect installation.
  • Damage caused by utilizing the product outside of the recommended parameters (for example, by overpowering speakers or subwoofers or by operating an amplifier below a 1 ohm load).
  • Damage brought on by distortion and/or clipping (improper tuning).
  • Products that seem to have been tampered with (modified or repaired products).
  • Theft.
  • Any item acquired via a DS18 unofficial dealer.

Item Abuse is a possibility and is classified as the repetitive returning of the same item with the same injury.

DS18 meticulously checks every returned item when evaluating whether a product is covered by warranty or not. Each returned product is extensively tested by DS18’s professional audio team to identify the root of the products malfunction. Based on the criteria above, DS18 holds complete discretion in deciding whether a product is covered by a warranty or not.

If a product is returned within two years of purchase and determined to be faulty according to our warranty guidelines, it will be replaced. DS18’s Return Policy may apply differently under Products purchased within 30 days, depending on their place of purchase.

Any item(s) qualified for warranty coverage may be replaced by DS18 with a device that has been reconditioned and is of equivalent quality. DS18 maintains the right to substitute the model of product that is most comparable to the original product in lieu of discontinued items that are being replaced under warranty.

We do everything we can to make sure you receive your items as soon as possible: however, in most circumstances, the claim is resolved within 48 hours. We ask that you give us 3 to 5 business days from the date of arrival at our facility for product testing and settlement of your claim.

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Product Reviews From Verified Purchasers


Wow! I couldn't be happier with my DS18 Hydro Subwoofer purchase from Outdoor Eco Sports. Not only is the subwoofer fantastic, but their shipping was lightning-fast! I received my order within two days of placing it. And their customer service? Top-notch! They were so helpful and responsive to all my questions. A five-star experience all around!

Miles P

I'm blown away by the DS18 Hydro Subwoofer and Outdoor Eco Sports' service. The subwoofer delivers exceptional sound, and I was amazed by how quickly it arrived at my doorstep. The customer service team at Outdoor Eco Sports is a true gem. They go above and beyond to make sure you're satisfied. I highly recommend them!

Chan C

Outdoor Eco Sports has set the gold standard for online shopping. The DS18 Hydro Subwoofer I purchased is phenomenal, and their shipping speed left me pleasantly surprised. I had a question about installation, and their customer service team was not only friendly but incredibly knowledgeable. They made the whole experience a breeze!

Harry B

My DS18 Hydro Subwoofer arrived at my doorstep faster than I expected, and it's been a game-changer for my audio setup.

Barry K

The subwoofer's performance is unmatched, and I was thrilled when it arrived in record time. Outdoor Eco Sports' customer service is a shining example of what every online retailer should strive for. They made me feel valued as a customer, and I couldn't be happier with my purchase!

Wil O

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