DS18 NXL-M4 NXL 4-Channel Full-Range Class D IPX5 Marine and Powersports Amplifier 2 x 150 Watts Rms @ 4-Ohm

  • $399.95
    Unit price per 

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Designed for intense sessions that keep the party boat rocking; the NXL-M4 is DS18’s newest high-quality, powerful amplifier for the marine or powersport enthusiast looking for big sound with a small footprint!

As a Class D Digital amplifier, the NXL-M4 uses direct insert speaker and power terminals significantly smaller than your average amplifier, making it the perfect size for any vehicle’s custom build: but, what it lacks in size it makes up for in power.

The NXL-M4 handles 150W x 4CH @ 4 Ohms; 230W x 4CH @ 2 Ohms; and 440W x 2CH @ 4 Ohms Bridge of RMS Power and 1800W Peak Power.

Get clean, well defined sound for with enough features (Fully Variable Bass Boost, Low Pass Filter, and High Pass Filter) to tune your music perfectly for optimal audio enjoyment! This full range amplifier handles all speakers insanely well and has the features to make sure they play the way you want them to!

This amplifier is tough enough to stand up to the worst the waves throw at you! All controls are guarded by high strength front covers that guarantee impenetrable defense against the elements; coated 4 layer PCB helps prevent corrosion caused by salt water; and Voltage, Thermal, and Short Circuit Protection for easy monitoring of your power levels.

Order the NXL-M4 for insane power out on the water!


  • Hardware resistant to corrosion and UV Protection
  • Coated 4 Layers PCB to prevent corrosion
  • IPX5 Water Resistance Grade
  • High Level Input For Easy Factory Integration
  • Front cover to keep the controls safe to the elements
  • LED Clip Indicator to easier adjustment
  • Stable and Reliable Class D Circuit Design
  • Sound Quality Verification Using AP Instruments
  • Direct Insert Power and Speaker Terminals
  • Short Circuit, Thermal, and Voltage Protection
  • 4 channel input / 2 channel output

Great For

  • Marine Audio
  • Jeep Audio
  • ATV Audio
  • Powersports Audio


Total Watts (Peak) 1800W
RMS Power @ 4 ohm 4 x 150W
RMS Power @ 2 ohm 4 x 230W
RMS Power @ 4 ohm Bridge 2 x 440W
Frequency Response 20Hz - 20KHz
Signal to Noise Ratio >90dB
Efficiency @ 4ohm >97%
Channel Separation >55dB
Total Harmonic Distortion (THD) <0.15%
Low Level Input Range 0.2V-6V
High Level Input Yes: ≥5V
Selectable X-Over HPF/LPF/FULL
X-Over Filter Range 40Hz - 2KHz
Bass Boost Range 0-12dB
Bass Boost Frequency 45Hz ±5Hz
Phase Selector No
Amplifier Class Digital (D)
Amplifier Type Stereo Full Range
Number of Channels 4 Channels
Minimum Impedance 2 ohm (Stereo) / 4 ohm (Bridge)
Led Indicator Clipping / Protect / Power
Power Input Terminal Size 4 Ga
Fuse Size 70A (2x35A)
Thermal Protection Yes
Over-Load Protection Yes
DC Output Protection Yes
Short Circuit Output Protection Yes
Voltage Input Protection Yes
Clipping Protection  Yes
Body Color / Finish Gray+White / Aluminum+ABS
Extra Features  
Water Resistant Rated Yes, IPX5 (Water Splashing)
PCB Layout Design 4 Layers / Coated
RCA Output Yes, 2 CH (Left / Right)
UV Compliant Yes, UV Protected and PCB Coated
Input Sum Selector Yes, 2Ch or 4Ch Input Mode
Tiffany Style RCA Yes
High Level Input Yes, 4ch Speaker level
Stainless Steel Hardware Yes, (Screws)
Potenciometers  High Quality Metal Knob 
Remote Level Control No
Overall Length 9.6" / 245mm
Overall Wide 4.5" / 116mm
Overall Height 1.7" / 43mm
Heatsink Length  8.6" / 220mm

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