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 Labor Day 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 3895 reviewsFantastic product. The sound quality just makes trips in the Jeep never long enough... world of difference.

The install was as easy as any modification that I've ever done to my 4runner. The units are well constructed, look good and are a very noticeable improvement over the stock tweeters. Price was very competitive to other brands that required a bit more work to have installed.

Bought this QUALITY CABLE for INSTALLING ALPINE AMP-ONLY Cable U can find with ANGLED RCA - very HAPPY:)

I bought these speakers to fit in the back doors of my 05 Chevrolet crew cab pickup they work great. They Give me more base which paired perfectly with the DS18s and tweets, I have in the front doors just what it needed.
Thanks DS18
I Like it Loud!

NO more then you pay for these they are the perfect upgrade!

Great service and fast wow thank you for packing it up really appreciate the team at the warehouse and sending my shipment with Care. Can’t wait to do the install on my Slingshot. This is gonna sound super loud thank you Team. Really appreciate you guys.

I have been looking for a 2 ohm speaker for my set up foud this one and l love it sounds really good and takes a ton of power

These evl 12s are where it’s at..build the box to specs like it says..hardest hitting subs I’ve bought to date

sound great look good even though you can’t see them in my truck

Fit & finish is very good bought them for my saddle bags on my 2000 road king installed your amp also combined with these speakers Wow very happy with the sound & performance $ well spent if I choose to add any more speakers I will definitely go with Ds18 in the future TY

Alot of sound for something small love it

Best loudspeakers🔥

I previously purchased a JBL rally bar 36 inch and was highly disappointed so I reached out to Anthony at DS 18 directly. He hooked me up with a set of 8 inch tower speakers 500 W he gave me a matching amp that I needed and a head unit, their customer service, especially Anthony walked me through the whole process of tuning my amp And system. It was so loud that we had to un bridge and just hook it up to 2 Channels Way more than I ever expected to get.the JBL rally bar. I couldn’t even hear the music over the motor running in the background very pleased with the product couldn’t be happier