The DS18 HOOLIGAN KO H-KO5 is a Korean-made, high-performance 1-channel Class-D monoblock amplifier built for bassheads who demand extreme output, efficiency, and long-term reliability. Designed specifically for subwoofer applications, this amplifier delivers 5000W RMS at 1 OHM with the control and stability needed for high-power daily systems and competition-level builds.

Built on a heavy-duty Korean board design, the H-KO5 combines advanced digital efficiency with extensive monitoring and protection features. An included remote bass knob with integrated voltmeter, temperature meter, and clip indicator allows real-time monitoring of system voltage, amplifier temperature, and signal clipping—helping protect your equipment while pushing maximum performance.

With a wide tuning range, infrasonic filtering, adjustable bass boost, and strap-mode capability, the HOOLIGAN KO H-KO5 offers the flexibility and power required to drive today’s high-demand subwoofers with confidence.

Key Features

• 1-channel Class-D monoblock subwoofer amplifier

• 5000W RMS at 1 OHM

• Stable operation from 1 OHM to 4 OHM

• Burst power capability down to 0.5 OHM

• Included remote bass knob with voltmeter, temperature meter, and clip indicator

• Fixed low-pass crossover with wide adjustment range

• Adjustable infrasonic filter for subwoofer protection

• Adjustable bass boost for added low-end impact

• Made in Korea with heavy-duty board design

• High-efficiency digital circuit for reduced heat and current draw

• Strap-mode (linkable) capable for extreme output systems

• Professional Tiffany-style RCA connectors

• Active cooling fan and full protection circuitry

Power Specifications

• RMS Power @ 4 OHM: 2200W

• RMS Power @ 2 OHM: 3500W

• RMS Power @ 1 OHM: 5000W

• RMS Power @ 0.5 OHM: 9200W (Burst Only)

Audio Specifications

• 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: 0.2V – 6V

• Crossover Type: Fixed Low-Pass Filter

• Low-Pass Filter Range: 35Hz – 250Hz

• Bass Boost: 0 – 9dB @ 45Hz

• Infrasonic Filter Range: 10Hz – 50Hz

• Phase Control: 0 – 180°

Design, Controls & Protection

• Amplifier Class: Digital (Class D)

• Amplifier Type: Monoblock / Subwoofer

• Number of Channels: 1

• Minimum Impedance: 1 OHM

• LED Indicators: Power / Protect / Clip

• Power Input Terminals: Dual 1/0 Gauge

• Fuse Rating: 420A

• Remote Level Control: Yes (Metal Housing)

• Voltmeter: Yes

• Temperature Monitoring: Yes

• Cooling Fan: Yes

• Thermal Protection: Yes

• Over-Load Protection: Yes

• DC Output Protection: Yes

• Short Circuit Protection: Yes

• Voltage Input Protection: Yes

• Clipping Protection: Yes

Additional Features

• LED clipping indicator: Yes

• Input mode selectable: No

• Crossover frequency multiplier: No

• Professional Tiffany RCA connectors: Yes

• Remote level knob with clip indicator: Yes

• Linkable (strap mode): Yes

• Reliable heavy-duty Korean board design: Yes

• Very high-efficiency digital circuit design: Yes

Dimensions & Weight

• Overall Length (with end plates): 15.35-inch (390mm)

• Overall Width: 9.68-inch (246mm)

• Overall Height (with end plates): 2.85-inch (72.5mm)

• Heatsink Length: 14.17-inch (360mm)

• Weight: 7.06 kg

Built for serious bass systems, the DS18 HOOLIGAN KO H-KO5 delivers massive Korean-made power with advanced monitoring, protection, and tuning control. If you need a 5000W RMS monoblock amplifier capable of driving demanding subwoofers while maintaining efficiency and reliability, the H-KO5 is engineered to perform session after session.