DS18
ZXI 4-Channel Class D Amplifier 4 X 250 Watts Rms @ 4-Ohm
ZXI 4-Channel Class D Amplifier 4 X 250 Watts Rms @ 4-Ohm
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ZXI 4-Channel Class D Amplifier 4 X 250 Watts Rms @ 4-Ohm
Sold by AudioSellerz.com
SKU: ZXI.4XL
ZXI 4-Channel Class D Amplifier 4 X 250 Watts Rms @ 4-Ohm is a DS18 amplifier from DS18 built for powering subwoofers, mids, highs, full-range speakers, motorcycles, marine systems, Jeeps, and powersports audio. This description helps shoppers looking for DS18 4 channel amp, DS18 amp, DS18 amplifier, car audio amplifier, monoblock amplifier understand where it fits in a real audio system.
Audio Sellerz focuses on the full build, not just one part. Match this DS18 product with the right vehicle, mounting space, amplifier power, wiring, fuse protection, enclosure needs, and electrical support so the system plays cleaner, louder, and more reliably.
Audio Sellerz System Match Notes
- Match the amplifier to the speaker or subwoofer RMS power, final ohm load, wire size, fuse protection, and vehicle electrical support.
- For amplified audio systems, make sure the power wire, ground, fuse protection, and voltage support match the equipment.
- If you are building a complete DS18 setup, plan the speakers, subwoofers, amplifiers, wiring, and electrical support together before ordering.
DS18 ZXI.4XL ELITE Full-Range 4-Channel Class D Amplifier
250 Watts X 4 @ 4-Ohm RMS
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.
REQUIRES 200A OF EXTERNAL FUSING
Boost your system’s power today with the ZXI.4XL!
Order your ZXI Amplifier today to take your system to the next level!
Highlights
- 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





Technical Details
| SPECIFICATIONS | |
| POWER | |
| 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 |
| AUDIO | |
| 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 |
| FEATURES | |
| 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 |
| MEASUREMENT | |
| 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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