Sundown Audio SFB-2000D

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Sundown Audio SFB-2000D 2000W RMS Class D Monoblock Amplifier – 1 Ohm Stable

The Sundown Audio SFB-2000D is a compact, high-output Class D monoblock amplifier engineered to deliver serious subwoofer power in a small footprint. Designed with a dual MOS-FET PWM power supply and stable 1-ohm operation, the SFB-2000D provides clean, efficient power for daily systems and performance bass builds.

Delivering up to 2000 watts RMS at 1 ohm, this amplifier features variable low-pass and high-pass filters, adjustable bass boost, and a wired remote with clipping indicator for easy system tuning and real-time monitoring. With advanced 4-way protection circuitry, the SFB-2000D offers reliable performance under demanding conditions.

Key Features

• Digital Class-D Monoblock Amplifier
• Compact full-range chassis design
• 1 Ohm Stable Load
• Dual MOS-FET PWM Power Supply
• Wired Remote Control Included
• Built-in Clipping Indicator
• Variable Low Pass Filter
• Variable High Pass Filter
• Variable Bass Boost
• 4-Way Protection Circuitry
• High efficiency design for reduced heat and current draw

RMS Power Output

• 1 Ohm Mono: 2000W RMS
• 2 Ohm Mono: 1500W RMS
• 4 Ohm Mono: 950W RMS

Audio Controls & Crossovers

• Low Pass Filter: 80Hz – 20kHz (12 dB/Octave Variable)
• High Pass Filter: 15Hz – 1kHz (12 dB/Octave Variable)
• Bass Boost @ 50Hz: 0 – 12dB (9 dB/Octave Variable)

These tuning controls allow precise adjustment for subwoofer performance and system integration.

Performance Specifications

• Signal-to-Noise Ratio: 100dB
• Input Sensitivity: 5V Max
• Working Voltage: 10.5V – 15.5V
• Recommended Fuse Rating: 180A

Protection Features

4-Way protection circuitry includes:

• Thermal Protection
• Voltage Protection
• Speaker Short Protection
• DC Offset Protection

Designed to help safeguard the amplifier during heavy use and extreme operating conditions.

Dimensions

Product Dimensions: 7.25" (L) x 7.50" (W) x 2.50" (H)

Why Choose the Sundown Audio SFB-2000D?

The SFB-2000D is ideal for users who need strong monoblock power in a compact amplifier chassis. Its 1-ohm stability, high RMS output, and built-in clipping indicator make it an excellent choice for powering subwoofers in daily driver or competition-inspired systems.

Perfect for:

• 2000W RMS subwoofer systems
• Compact amplifier installs
• High-output bass builds
• Sundown Audio system upgrades
• Trunk or under-seat amplifier installs