• Powerful 4-Channel Output: Delivers 300W RMS per channel at 4 ohms and 500W per channel at 2 ohms, with 1000W bridged, providing high-quality power for both speakers and subwoofers.
• Precision Tuning Capabilities: Features selectable high-pass, low-pass, and full-range crossovers (50Hz–2KHz), 0-9dB bass boost, and a 0-180 phase selector for optimal sound customization.
• Reliable & Durable Design: Built with a heavy-duty Korean board, Class AB analog circuitry, and advanced cooling fan for efficient heat management during extended use.
• Enhanced Control & Monitoring: Comes with a remote level knob with a clip indicator, VM-1 voltmeter for real-time voltage monitoring, and IR remote-controlled RGB LED lighting for visual customization.
• Comprehensive Protection Features: Equipped with thermal, overload, short circuit, voltage input, and clipping protection to ensure safe, consistent operation in demanding setups.

4   Ch Class A/B 2000 w RMS 2 Ohm Amplifier w/WM-1 Voltmeter SMD-500.4AB DS18

The SMD-500.4AB is a high-performance 4-channel amplifier designed for superior audio clarity, delivering 300 watts RMS per channel at 4 ohms and up to 500 watts at 2 ohms. With 1000 watts bridged into 2 channels, it is ideal for driving both speakers and subwoofers, providing versatile system configurations. Built on a powerful Class AB analog design, this amplifier guarantees precise sound reproduction with low distortion, perfect for audiophiles demanding peak performance.

Key Features:

• Class AB Analog Design for smooth, natural audio playback


• Selectable HPF/LPF/Full-Range Crossovers for precise tuning (50Hz–2KHz)


• 0-9dB Bass Boost Control at 30Hz–60Hz for enhanced low-frequency response


• RGB Lighting with IR Remote Control to customize LED colors and patterns


• Remote Level Control with clip indicator in a durable metal case


• Tiffany RCA Connectors for professional-grade signal transmission


• Thermal, Overload, and Short Circuit Protection for safe operation


• Reliable Heavy-Duty Korean Board Design with Class AB circuitry


• VM-1 Voltmeter Display to monitor system voltage in real-time

Specifications:

• RMS Power @ 4 Ohm: 300W x 4


• RMS Power @ 2 Ohm: 500W x 4


• RMS Power @ 4 Ohm Bridge: 1000W x 2


• Frequency Response: 10Hz – 24KHz


• Signal-to-Noise Ratio: >98dB


• Efficiency @ 4 Ohm: >70%


• Damping Factor: 160


• Input Impedance: 22K Ohm


• Channel Separation: >50dB


• Total Harmonic Distortion (THD): 0.10%


• Low-Level Input Range: 200mV – 6V


• Phase Selector: 0 – 180


• Thermal Protection


• Overload Protection


• Short Circuit Output Protection


• Voltage Input Protection


• DC Output Protection


• Clipping Protection

Measurements:

• Overall Length: 16.6" / 422mm


• Overall Width: 9.15" / 232mm


• Overall Height: 3" / 76mm


• Heatsink Length: 15" / 380mm


• Gross Single Unit Weight: 12 lbs / 5.44 kg

The SMD-500.4AB amplifier from DS18 is engineered to elevate any high-performance car audio setup with durability, power, and flexibility. Whether driving speakers or subwoofers, this amplifier delivers unmatched audio quality and reliable performance for serious audio enthusiasts looking to fine-tune their sound systems.