The DS18 HOOLIGAN KO H-KO340 is a Korean-made, competition-grade 4-channel Class-D full-range amplifier engineered for clean power, flexibility, and durability. Designed for high-performance door speakers, mids, highs, and active system layouts, this amplifier delivers 4 x 300W RMS at 4 OHM, 4 x 550W RMS at 2 OHM, or 2 x 1000W RMS bridged at 4 OHM.

Built on a heavy-duty Korean board design, the H-KO340 combines high-efficiency digital circuitry with advanced protection systems to handle aggressive daily use and competition environments. With selectable HPF, LPF, and band-pass crossovers, wide frequency adjustment, and input flexibility, this amplifier provides precise control for full-range and active audio systems.

LED indicators for power, protection, and clipping, professional Tiffany-style RCA connectors, and an included remote level control with clip indicator make the H-KO340 easy to tune and monitor while delivering consistent, clean output session after session.

Key Features

• 4-channel full-range Class-D amplifier

• 4 x 300W RMS at 4 OHM

• 4 x 550W RMS at 2 OHM

• 2 x 1000W RMS bridged at 4 OHM

• Stable operation at 2 OHM per channel / 4 OHM bridged

• Selectable HPF / LPF / Band-Pass crossovers

• High-efficiency digital circuit design

• Heavy-duty Korean-built board construction

• LED indicators for Power / Protect / Clip

• Included remote level control with clip indicator

• Professional Tiffany RCA connectors

• Made in Korea

Power Specifications

• RMS Power @ 4 OHM: 4 x 300W

• RMS Power @ 2 OHM: 4 x 550W

• RMS Power @ 4 OHM Bridged: 2 x 1000W

Audio Specifications

• 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: 0.2V – 8V

Crossover & Tuning Controls

• Selectable Crossovers: HPF / LPF / Band-Pass

• HPF Range: 20Hz – 8KHz

• LPF Range: 50Hz – 8KHz

• Frequency Multiplier: 1X / 10X

• Bass Boost: Not Available

• Infrasonic Filter: No

• Phase Control: No

Electrical, Inputs & Protection

• Amplifier Class: Digital (Class D)

• Amplifier Type: Stereo Full-Range

• Number of Channels: 4

• Minimum Impedance: 2 OHM per channel / 4 OHM bridged

• Power Input Terminal Size: 1/0 Gauge

• Fuse Rating: 200A

• Cooling Fan: No

• Voltmeter: No

• LED Indicators: Power / Protect / Clip

• Protection Circuitry: Thermal, Over-Load, DC Offset, Short Circuit, Voltage Input, and Clipping

• Input Mode Selectable: Yes

• X-Over Frequency Multiplier: Yes

• Strap Mode: No

Dimensions

• Overall Length (with end plates): 14.5-inch (370mm)

• Overall Width: 9.68-inch (246mm)

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

• Heatsink Length: 13.3-inch (340mm)

The DS18 HOOLIGAN KO H-KO340 is a competition-ready 4-channel full-range amplifier built for clean power, system flexibility, and long-term reliability. Whether powering mids and highs, running an active setup, or bridging channels for serious output, the H-KO340 delivers Korean-engineered performance with precise control and efficiency.