Description:The SFB-1500D is a compact Class D Monoblock amplifier rated at 1500 Watts RMS. Although rated at 1500 Watts this amp really puts out up to 1,750 watts RMS at 1 ohm on a bench because like all of Sundown amps it does more than rated power. This amp is part of Sundown's iconic SFB series, it packs serious power into a small footprint with a dual MOS-FET PWM power supply, variable low and high pass filters, adjustable bass boost, and a smart three-speed cooling fan. It includes a wired remote with a clipping indicator, making it a high-value option for powering subwoofers on a budget.Features: Digital Class-D Mono Block Amplifier Dual MOS-FET PWM Power Supply 1 Ohm Stable Load 12 dB/Octave - Variable Low Pass Filter 0 to 12dB - Variable Bass Boost 4 Way Protection Circuit (Thermal, Voltage Speaker Short and DC Offset) Wired Remote Control with Clipping Indicator Specifications: 1Ω Mono RMS: 1500W 2Ω Mono RMS: 1200W 4Ω Mono RMS: 650W Recommended Fuse Rating: 140A Low Pass Filter (-12dB/8) Variable: 80HZ-20kHz High Pass Filter (-12dB/8) Variable: 15-1kHz Signal Noise Ratio: 100dB Width: 185mm Length: 172mm Height: 64mm Width: 7.25" Length: 6.75" Height: 2.50"