DS18 ZXI.4XL ZXI 4-Channel Class D Amplifier 4 X 250 Watts Rms @ 4-Ohm

  • $419.95
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ZXI.4XL – ELITE Full-Range 4-Channel Class D Amplifier – 250W x 4CH @ 4 OHM

The ZXI Series is one of the leading amplifier families in DS18’s catalog! 

As one of our best-selling lines, it’s only right we honor it with EXTREME upgrades given our decade of experience!

The ZXI.4XL is one of the most versatile amplifiers in our catalog: this Full-Range Amplifier outputs enough power to supercharge any powerful competitive or casual sound system and any of the components that build it!

This 4-channel amplifier pure and clean 4-channel signal and 2 channel outputs to run HQ signal to run to another amp or string of amps. There is also a selector switch to move from 4 channel to 2 channel mode.

Built from top of the line components (Block Style Terminals, Fully Variable Crossover, Platinum Finish Connections, and High Quality Protection Circuitry) this amplifier is guaranteed to deliver insane quantities of RMS Power on demand!

The ZXI.4XL handles 250W x 4CH @ 4 OHM; 400W x 4CH @ 2 OHM; and 800W x 2CH @ 4 OHM Bridge of RMS Power.


Boost your system’s power today with the ZXI.4XL!

Order your ZXI Amplifier today to take your system to the next level!


  • Platinum finish connections that resist corrosion
  • Fully Variable Crossovers
  • Protection Circuitry against Overload, Short Circuit, Thermal, Low Voltage, High Voltage, and Reverse Polarity
  • Up to 16.8v of Operational Voltage
  • Filters are included so you can adjust the high pass and low pass filters so your speakers perform at their best.
  • 0 to 180 degree phase switch is included for more complex systems that need the phase reversed.
  • Fuses included on the amplifier for easy access and amp circuitry protection.
  • The terminals are stainless and use Allen keys to tighten for the best connectivity possible.

Great For

  • Car Audio
  • Pro Audio
  • Stunt Walls
  • Motorcycle Audio
  • Powersports Audio
  • DIY Project

Total Watts (Peak) 4800W
RMS Power @ 4 ohm 4 x 250W
RMS Power @ 2 ohm 4 x 400W
RMS Power @ 1 ohm N/A
RMS Power @ 4 ohm Bridge 2 x 800W
Frequency Response 20Hz-20KHz
Signal to Noise Ratio >90dB
Efficiency @ 4ohm >85%
Damping Factor >200
Total Harmonic Distortion (THD) <0.1%
Low Level Input Range 0.2 - 6v
High Level Input No
Selectable X-Over LPF/FULL/HPF
X-Over Filter Range 40Hz-4KHz
Bass Boost Range No
Bass Boost Frequency No
Infrasonic Filter No
Phase Selector No
Amplifier Class Digital
Amplifier Type Stereo Full Range
Number of Channels 4
Minimum Impedance 2 ohm (Stereo) / 4 ohm (Bridge)
Led Indicator Power/Protection/Clip
Power Input Terminal Size 4ga
Fuse Size 200A (External)
Remote Level Control No
Cooling Fan No
Voltmeter  No
Thermal Protection Yes (>160°F / 71°C)
Over-Load Protection Yes
DC Output Protection Yes
Short Circuit Output Protection Yes
Voltage Input Protection Yes (8.5-16.8V)
Cliping Protection  Yes
Body Color / Finish Black Aluminum Brush
Overall Lengh 12.2" / 310mm
Overall Wide 5.66" / 144mm
Overall Height 1.9" / 48.5mm
Heatsink Length  11.42" / 290mm

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