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Description

DS18 H-KO5/RD

The DS18 H-KO5 is a compact 1-channel Class D car audio amplifier designed to deliver powerful, clean bass for subwoofers. Engineered with premium components, it provides stable performance across 1 Ω to 4 Ω loads, low distortion, and efficient thermal management for reliable operation. Featuring advanced protection circuitry and a durable, compact design, the H-KO5 is ideal for custom car audio setups where deep, controlled bass and high efficiency are required.


Power Specifications

Specification Value
SKU H-KO5/RD
RMS Power @ 4 Ohm 2200W
RMS Power @ 2 Ohm 3500W
RMS Power @ 1 Ohm 5000W
RMS Power @ 0.5 Ohm 9200W (burst only)
RMS Power @ 4 Ohm Bridge N/A

Audio Specifications
Specification Value
Frequency Response 13Hz – 300Hz
Signal to Noise Ratio >96dB
Efficiency @ 4 Ohm 96%
Damping Factor 400
Total Harmonic Distortion (THD) <0.2%
Low Level Input Range 0.2 – 6V
Selectable X-Over Fixed LPF
X-Over Filter Range 35–250Hz
Bass Boost Range 0–9dB
Bass Boost Frequency 45Hz
Infrasonic Filter 10–50Hz
Phase 0–180°

Features
Specification Value
Amplifier Class Digital (D)
Amplifier Type Monoblock / Subwoofer
Number of Channels 1
Minimum Impedance 1 Ohm
LED Indicator Power / Protect / Clip
Power Input Terminal Size 2 × 1/0 GA
Fuse Size 420A
Remote Level Control Yes (Metal Case)
Cooling Fan Yes
Voltmeter Yes
Thermal Protection Yes
Over-Load Protection Yes
DC Output Protection Yes
Short Circuit Output Protection Yes
Voltage Input Protection Yes
Clipping Protection Yes
Body Color / Finish Red / Black / Titanium

Extra Features
Specification Value
X-Over Frequency Multiplier No
Input Mode Selectable No
LED Clipping Indicator Yes
Professional Tiffany RCA Connectors Yes
Remote Level Knob with Clip Indicator Yes
Linkable (Strap mode) Amplifier Yes
Reliable Heavy Duty Korean Board Design Yes
Very High Efficiency Digital Circuit Design Yes

Measurements
Measurement Value
Overall Length (with end plate) 15.35″ / 390mm
Overall Width 9.68″ / 246mm
Overall Height (with end plate) 2.85″ / 72.5mm
Heatsink Length 14.17″ / 360mm
Gross Single Unit Weight 7.06 kg

Product Overview

DS18’s H-KO5 is a high-performance, Korean-made powerhouse perfect for bassheads who want the best from their builds. With an underrated MAX power output of 5000W, the H-Ko5 is capable of driving even the most demanding subwoofers. And thanks to advanced Class-D technology, it operates efficiently and generates less heat than traditional amplifiers, for sessions that never have to end.
The H-Ko5 also includes several useful features that help you monitor its performance: like, the built-in volt meter, and the temperature meter to monitor the voltage and internal temperature of the amplifier. With the included clip indicator, you can avoid damaging your subwoofers and guarantee cleaner and clearer sound.
The H-Ko5 is also designed to be easy to install and use. Its compact and durable aluminum chassis withstands the rigors of daily use, and includes all the necessary mounting hardware needed for a secure installation. With customizable features, such as the variable low-pass filter, you can fine-tune the frequency response to match your specific subwoofers and enclosures, for competition level performance every session.
DS18’s H-Ko5 is the perfect choice for outstanding performance and reliability!

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Questions and Answers

Q1: What is the H-KO5?

A1: It’s a 1-channel Class D car audio amplifier designed to deliver clean, high-power bass for subwoofers.

Q2: How many channels does it have?

A2: It has 1 channel (mono), intended for powering low-frequency subwoofers.

Q3: What power output does it produce?

A3: It delivers up to 500 W RMS at 2 Ω and remains stable up to 4 Ω loads for distortion-free bass.

Q4: Does it include protection features?

A4: Yes — it has thermal, overload, short-circuit, and voltage protections to safeguard your system.

Q5: Why choose this amp for car installations?

A5: Its compact design, powerful output, low distortion, and reliable cooling make it perfect for custom car audio setups seeking deep, controlled bass.


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