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 3687 reviewsThe speaker covers are great quality and fit perfectly. The price was the best I could find anywhere.

Love these speakers sound amazing compared to my stock speakers

They are amazing just outstanding better then I could imagine i will definitely be installing more

They are very loud and they are clear

What can I say about a fuse holder. It’s mounted don’t worry. In photo it’s not mounted

I put DS18s in one of my jeeps and I love it. I will be upgrading my other two jeeps with the same brand DS18. 10 out of 10 recommend if you’re reading this review get some we like it loud!

With amp i can tell a difference in my 8s . They hit hard with the power that comes out of this amp

These speakers in my opinion out perform higher priced tower speaker from ds18 and other major brands!!!

Love the way it fits, looks and sounds, ds18 products all the way,love the enclosed and padding fender pods, dual 8” on each pod is extremely ideal, because all other products are dual 6.5” only

IXS Shallow-Mount 12" Fiber Glass Subwoofer 800 Watts Rms SVC 4-Ohm

the only issue I had was I couldn't find a radio on (Blue/white stripe) anywhere ut i was able to pick up a Acc/Run on terminal from my relay pack under the hood... and it Rocks !! I used the stock 25W jeep head and NVX dash and roll bar kit and this DS18 SQBASS Underseat Subwoofer im still tweaking the gain/boost/filter for the jeep but its close !!!

Great value sub

This sound bar with the recommended AMP is definitely a big upgrade from factory. It’s super loud. We also had dash speaker/AMP upgrade and mounded the Sub box to the cargo door with 10” Subs/AMP. This sound system is so loud now you have no problem hearing it with the top, windows open, running 80 mph down the road. This was a Mother’s Day gift and my wife loves it.

The power cell solved an ongoing issue I was having. My vehicle has electronic everything. Specifically my power steering, it’s electronic. I would steer and then my radio would cut out. With this power cell installed it hasn’t happened once! My subs sound more powerful than before as well. Over all this was a great upgrade to my ride. Thank you DS18.

I was skeptical ordering these because I thought to myself how much difference a tweeter will produce, so I figured why not. Glad I made this purchase. They are MUCH louder than the factory tweeters, no longer have the volume at 35 to drown out wind noise to hear my music. And they are completely plug and play to the factory harness; these took me no less than 5 minutes to install tops! Huge upgrade at a great price point. Switching all my speakers now to DS18.
