ZXI 5-Channel Class D Amplifier 4 x 125 @ 4-Ohm + 1000 x 1 Watts Rms @ 1-Ohm
SOLD OUT






ZXI 5-Channel Class D Amplifier 4 x 125 @ 4-Ohm + 1000 x 1 Watts Rms @ 1-Ohm
SOLD OUT
Sale $611.96 / EACH
Reg.$719.95
15% OFF FOR MOVING SALE!
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Key Features
- 5 Channel Full Range
- Class D
- 1 ~ 4 Ohm Stable
- 4 x 125 Watts @ 4 Ohm + 1 x 1000 Watts @ 1 Ohm
- Built in Crossover
- Bass Control Knob
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Technical Data - Manual
DOWNLOAD THE USER MANUAL
SPECS
SKU
ZXI.5
Total Watts (Peak)
5000W
RMS Power @ 4 Ohm
4 x 125W + 420W (SUB)
RMS Power @ 2 Ohm
4 x 170W + 705W (SUB)
RMS Power @ 1 Ohm
1000W (SUB)
RMS Power @ 4 Ohm Bridge
2 x 340W
Audio
Frequency Response
20Hz-20KHz
Signal to Noise Ratio
>90dB
Efficiency @ 4 Ohm
>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 (50-250Hz SUB)
Bass Boost Range
0-18dB
Bass Boost Frequency
45Hz
Infrasonic Filter
10-55Hz
Phase Selector
No
Features
Amplifier Class
Digital
Amplifier Type
Stereo Full Range
Number of Channels
5
Minimum Impedance
2 ohm (Stereo) / 4 ohm (Bridge) / 1 ohm (SUB)
Led Indicator
Power/Protection/Clip
Power Input Terminal Size
4ga
Fuse Size
200A (External)
Remote Level Control
Yes
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
Extra Features
Tiffany RCA connectors
Yes
Input Selector
Yes (4ch/5ch)
Compact Size to easy Installation for Any Applications
Yes
Stable/Reliable Two Layers Traces PCB Design
Yes
Quality Control Verification using Audio Precision Instruments
Yes
Measurement
Overall Length
14.2" / 360.6mm
Overall Width
5.66" / 144mm
Overall Height
1.9" / 48.5mm
Heatsink Length
13.4" / 340.6mm
Gross Single Unit Weight (Lb)
8
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Product Overview
Product Overview
DS18 ZXI.5 Full-Range 5-Channel Class D Amplifier 125W x 4 @ 4-Ohm + 1000W x 1 @ 1-Ohm RMS
In the world of car audio, evolution is inevitable, and DS18 understands this better than anyone else. We proudly present the ZXI.5, a monumental upgrade to our already legendary Z Series amplifiers.
DS18’s ZXI.5 is more than just an amplifier; it's an elegantly designed powerhouse that effortlessly blends aesthetics with durability. Its sleek, modern design hides the high-efficiency heat sinks and high quality circuit board that keep it cool under the most demanding conditions, ensuring uninterrupted performance when you need it most.
With 125W x 4 @ 4-Ohm RMS and 1000W x 1 @ 1-Ohm RMS, DS18’s ZXI.5 doesn't just play music; it commands it. Feel the earth-shaking bass and the crystal-clear highs like never before. It's not just volume; it's an immersive audio experience that'll transport you to another world.
Tuning your audio system has never been easier. The DS18 ZXI.5 allows you to expertly tune your music to your preferences with easily adjustable crossover and 0 to 180 degree phase switch, putting the power to create your perfect soundstage right at your fingertips. Whether you're a bass enthusiast or a lover of crystal-clear highs, this amplifier ensures that your audio settings are tailored to perfection, elevating your in-car audio experience to levels never thought possible.
The DS18 ZXI.4 isn't just an amplifier; it's the key to unlocking your car's full sonic potential. Elevate your car audio to legendary status. Your ears deserve nothing less.




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ZXI 5-Channel Class D Amplifier 4 x 125 @ 4-Ohm + 1000 x 1 Watts Rms @ 1-Ohm
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Good size for a Honda civic with 4 door ds18 speakers and 12” subwoofer.
Let customers speak for us
from 3635 reviewsThese are the best in the market definitely will buy again from ds18

The tweets I put in brings it all together. Affordable with quality sound.

Just installed in my ultra classic and couldn't be happier. Great sound and very loud. Will definitely be buying another set for the lowers.

A1+all hands up

These are the best tweeters I’ve come across in a very long time.

Fits well!!! Looks good!!! Priced well!!! Performs as expected. The only thing I would change applies to all the DS18 products that have RGB Chasing LEDs in them. Change the wire coloring from Red (12V+) Black (12v-) White (Data) to either Red Black Green , Red Black Yellow, or Red White Green. Having the data wire in white can make it confusing when adding to an LED setup. It would be more inline with the normal practices.

Overall great sound quality and improved my sounds tremendously from a voice perspective it elevated it to a differnt level will definitely recommend to others!

Love the way it works and easy to install

Delivery was fast, and showed up on time. Very powerful amp, and so far the best amp I have ever had. Make sure you have the proper electrical system to power this monster. Haven't had any problems with it so far. Definitely will be buying 2 of the hool-x15.1 dhe
high excursion subwoofer to try them out as well

I replaced a skar 100.4 with this one and my speakers came alive, love this amp and also very small

These speakers are beautifully made and sound awesome! Very loud and clear and the LED lighting is the perfect touch.

Popped right into my factory speaker slot! Great quality gives you that organized clean look your heart desires 🤣

I have ordered a few things from DS18. I have their equipment in my motorcycle and I am enjoying it. I had an issue with one speaker that didn’t work but I was able to get online and get a replacement sent under warranty. Fast shipping.

Very simple to install and everything is self explanatory
