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Description

DS18 H-KO340

The DS18 H-KO340 is a 4-channel car audio amplifier engineered for clean, dynamic sound across both full-range speakers and subwoofers. Built with premium components, it delivers stable power output from 2 Ω to 4 Ω, low distortion, and reliable performance in custom car audio setups. Featuring advanced protection circuitry, an efficient cooling system, and a compact, durable design, the H-KO340 ensures high-fidelity audio and consistent power for multi-speaker configurations.


Specifications

Specification Value
SKU H-K0340
RMS Power @ 4 Ohm 4 × 300W
RMS Power @ 2 Ohm 4 × 550W
RMS Power @ 1 Ohm N/A
RMS Power @ 0.5 Ohm N/A
RMS Power @ 4 Ohm Bridge 2 × 1000W

Audio Specifications
Specification Value
Frequency Response 13Hz – 20kHz
Signal to Noise Ratio >90dB
Efficiency @ 4 Ohm 90%
Damping Factor 100
Total Harmonic Distortion (THD) <0.2%
Low Level Input Range 0.2–8V
Selectable X-Over HPF / LPF / BAND-PASS
X-Over Filter Range HPF: 20Hz–8kHz / LPF: 50Hz–8kHz (1X/10X)
Bass Boost Range No
Bass Boost Frequency N/A
Infrasonic Filter No
Phase No

Features
Specification Value
Amplifier Class Digital (D)
Amplifier Type Stereo Full-Range
Number of Channels 4
Minimum Impedance 2 Ohm/Ch (4 Ohm Bridge)
LED Indicator Power / Protect / Clip
Power Input Terminal Size 1/0 GA
Fuse Size 200A
Remote Level Control Yes (Metal Case)
Cooling Fan No
Voltmeter No
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

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

Measurements
Measurement Value
Overall Length (with end plate) 14.5″ / 370mm
Overall Width 9.68″ / 246mm
Overall Height (with end plate) 2.85″ / 72.5mm
Heatsink Length 13.3″ / 340mm
Gross Single Unit Weight Not Specified

Product Overview

4-Channel Competition Class D Full-Range Amplifier

DS18’s H-KO340 is a high quality, high performance, and HIGH POWERED 4-Channel Full-Range Class D Competition Amplifier. This Korean-made powerhouse is built to be beefier, more efficient, and even more durable for competition-level performance.
DS18’s H-KO340 is designed to deliver MASSIVE POWER: with RMS ratings of 4 x 300W at 4 ohms, 4 x 550W at 2 ohms, and 2 x 1000W at 4 ohms bridged. This amplifier is so powerful, we’ve equipped it with a range of protection circuits including thermal, over-load, DC, short circuit, voltage, and clipping. The LED indicators provide a clear visual representation of the amplifier’s working status, protecting you and your vehicle from damage.
The Tiffany RCA connectors ensure a secure and reliable connection for optimal audio performance. Strap mode connection and included remote bass knob offers convenient control over your audio system. You can easily adjust the bass levels on-the-fly, allowing you to fine-tune your sound to perfection.
The selectable X-Over allows for HPF, LPF, and band-pass filtering, ensuring precise sound shaping and FULL RANGE CONTROL. The Korean high efficiency digital circuit design delivers clean power with minimal distortion (<0.2% THD) making things easier on your charging system and guaranteeing longevity.
Enjoy music the way it was meant to be heard with DS18’s H-KO340!

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Questions and Answers

Q1: What is the H-KO340?

A1: It’s a 4-channel car audio amplifier designed to provide clean, high-fidelity sound for speakers and subwoofers.

Q2: How many channels does it have?

A2: It has 4 channels, suitable for multi-speaker setups or combined speaker and subwoofer configurations.

Q3: What power output does it produce?

A3: It delivers up to 85–100 W RMS per channel at 4 Ω and 125–150 W RMS per channel at 2 Ω for stable, low-distortion audio.

Q4: Does it include protection features?

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

Q5: Why is this amp suitable for car installations?

A5: Its compact design, stable multi-channel output, low distortion, and reliable cooling make it ideal for custom car audio setups requiring consistent power and precise sound.


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